brilliant biles — the american gymnast makes history as she becomes the first female gymnast to win four all—around world titles. and coming up on bbc news, former leicester manager claudio ranieri makes an emotional return, while claude puel describes it as the hardest week in the club's history. good evening and welcome to the bbc news at six. an investigation is being launched by the national crime agency into the prominent businessman aaron banks and his leave.eu campaign for alleged offences committed in the eu referendum. mr banks was referred to the nca by the elections watchdog which suspects that £8 million given to the campaign had come from what it called "impermissible sources". aaron banks has welcomed the investigation and said he never received any foreign funding during the campaign. our political editor, laura kuenssberg, reports. one brexit‘s bad boys, as he describes himself, arron banks doesn't look like he has much on his mind today, but the multimillionaire, bankroll of some of the campaign to leave the eu, is now under investigation over whether he committed crimes. we've had many, many investigations, many questions about where that money came from, the largest donation in british political history. the commission in charge of the referendum rules suspects mr banks was not the true source of £8 million worth of loans to groups that supported brexit, and they suspect that the loans came from a company in the isle of man — thatis from a company in the isle of man — that is not allowed by law, and they suspect that mr banks and his collea g u es suspect that mr banks and his colleagues knowingly concealed that. the commission says at least £2.9 million of that money was spent during the referendum campaign. mr banks and his colleagues have never been backwards about coming forwards. in june, been backwards about coming forwards. injune, they came to westminster and were pushed by mps over links to foreign money. we've i'iow over links to foreign money. we've now got a full—scale russian witchhunt going on. did you do business with russia as a consequence of these meetings? i've got no business interest in russia and i've done no deals in russia. you've got a vested interest in trying to discredit the brexit campaign. leaving mps for lunch and in disbelief when the session run over. his associate, who was also being investigated, denied doing anything wrong. yes, i think the magpie run the group companies where the money is from, and we don't have any transactions from russia. mr banks welcome the inquiry saying... you may never have heard of him, but arron banks is not afraid of controversy. he has a big cheque—book and a big ambition to make brexit happen. he was always happy to push political convention. douai selfie, come on! but in doing so, might arron banks have also broken the law? laura kuenssberg, bbc news, westminster. i'm joined now by our reporter manveen rana. manveen, you interviewed aaron banks in the summer and asked him about the source of his funding. what did he say? well, - i spoke to arron banks, he was absolutely adamant that this money had all come from his own personal wealth. you know, we had managed to see the publicly listed accounts for his british companies, we couldn't see any that seem to have sufficient funds for a donation of this size, yet he kept saying that the money came directly from his bank account. now, the report today shows that the electoral commission was clearly asking similar questions. they've been able to see much more detailed accou nts been able to see much more detailed accounts for the company that he said that the donation had come through, and they don't believe there was enough money in that company to justify such a large donation. they pointed to another company, an offshore company as being part of the financial transactions. that is registered in the isle of man, which, under electoral law, would not be admissible as a donor. it also presents challenges for the electoral commission because they can't follow the money trail so far, and that is one of the reasons they have referred this to the national crime agency and it has become a live criminal investigation. arron banks and elizabeth bentley have today denied any wrongdoing. thank you very much, manveen rana. the sports minister tracey crouch has resigned amid claims that the government has delayed cutting the maximum stake on fixed—odds betting terminals from £100 to £2 until october 2019 instead of next april. the government is changing the rules next year to try to tackle problem gambling, but there've been claims that such a big reduction in the amount people can stake could cost thousands of jobs. our political correspondent vicki young is in westminster. and, vicki, this is an announcement that was made within the budget on monday. that's right, it is not about the principle of the reduction, that has been decided but there were clearly mps, including tracey crouch, on all sides of the house whose understanding was that this change would be brought in in april. now, in the budget it was announced that actually it would be in october. now, earlierthe announced that actually it would be in october. now, earlier the culture ministerjeremy wright defended it, saying it was a huge change for the gambling industry, there will potentially be job losses, they have to have time to adapt, but we have now seen the letter from tracey crouch, her resignation letter to the prime minister, and it is clear how passionate she feels about this issue, she campaigned for it for a long time, and she says it is all about supporting vulnerable people against the power of big business, and she talks about the impact that this kind of gambling has on people's families, the fact that it preys on many of the most vulnerable people in society, and can lead to suicide. now, this will be, i think, destabilising for the government, with everything else that is going on, so that is definitely a problem for them, and they could end up, well, losing a minister but also a vote on this, because tracey crouch is not the only conservative mp who would be prepared to vote against the government on this issue. vicki young, thank you. staff at google offices around the world are staging an unprecedented series of walk—outs in protest at the company's treatment of women and ethnic minorities. the protests began in tokyo and singapore and have swept around the world. one of the major issues is how sexual misconduct allegations are dealt with at the firm. sophie long has the story. iam fed i am fed up! a clear message from google workers in new york — it is time to change the way they company deals with sexual harassment. time to change the way they company deals with sexual harassmentlj time to change the way they company deals with sexual harassment. ijust felt that it was something good to do, we had the opportunity to show solidarity, that is the only way things are going to change, when things are going to change, when things happen in numbers and they see a large group of people speaking up, and that is when i think things start to change. at 11 o'clock local time, colleagues around the world worked away from their workstations. in zurich, in dublin, they stopped swiping screens in tokyo and singapore, and in london, like google employees elsewhere, they left this message at their desks and went to protest. anger has been growing among the tech giant's statins the new york times revealed andy rubin, the man known as the creator of the android operating system, left the company with a $90 million pay—out despite facing an allegation of sexual misconduct which he denies. google's chief executive, summed up the giant, has apologised. he's told employees these he's listening so he can turn their ideas into action. —— summed i don't know that we'll see a change of culture. right now we have a ceo, sundar pichai, who says he wants to see change, he's encouraged this walk—out, but i think what we have to pay attention to is, one, whether or not any of these demands or met or responded to or how the company responds, and also whether or not the employees themselves believe that things have changed. so so far it seems they don't. many walked out of work today feel that the company, famous for its collaborative culture and employee perks, is not meeting basic standards of respect, justice and fairness and that, they say... time is up! has to change. sophie long, bbc news. one of the most senior police officers in england and wales has warned today that there is "a lot less policing" going on as a result of years of cuts. sara thornton, who chairs the national police chiefs' council, has called for a focus on "core policing". but she was criticised for saying that police shouldn't be asked to do things like record incidents of misogyny. she's been talking to our home affairs correspondent daniel sandford. his report contains flashing images. out in south london today with a metropolitan police response car, trying to chase down a vehicle that has refused to stop. these officers are available to respond to any call and are then pulled off to investigate a car crash. it's everyday work, but police forces across england and wales say it's getting harder as they feel the financial squeeze. we can be more efficient, we can be more modern... the chair of the chief constables' organisation told me police understand the need to modernise but funding is becoming a real problem. it's absolutely clear that there are fewer officers and fewer staff, and there's a lot less policing activity now than there was two or three years ago. that is very apparent in the numbers of arrests, the number of charges or summons. we watched this afternoon as a suspected shoplifter was being booked into the cells at bishopsgate police station by city of london police officers. but when fewer officers are available, opportunities to arrest suspects become fewer too. police forces have been warning for years that, as budgets have shrunk, core policing has started to suffer. the home secretary, sajid javid, said he understands their concerns but he says resourcing is only part of the solution — they need to modernise too. sara thornton said yesterday that if the public want officers to investigate violence and burglaries, they shouldn't be asked to do other things, like recording incidents of misogyny — prejudice against women, which isn't currently a crime. but women's equality campaigners say the importance of recording misogyny shouldn't be played down. why should one of the most common forms of hate crime be ignored? we have to get it recognised, and that's the first step, and once it is recognised at the scale it is, then perhaps police will give it due priority. the real issue here is resources. if society decides that hate speech and gender—based hate speech is a crime, then we have to provide the resources. but the government says any decisions on policing priorities should be being taken locally. local police chiefs should be free, alongside the elected police and crime commissioners, to set the priorities that their communities need or have to deal with. that is local policing, it's operationally independent. and with spending decisions due in the autumn, the debate over police funding is onlyjust warming up. daniel sandford, bbc news. for the first time, doctors can legally prescibe some patients with medicinal cannabis in the uk, though restrictions remain tight. it can only be prescribed by a specialist doctor and in a limited number of circumstances where other medicines have failed. but the decision to relax the rules, followed an outcry over two boys with severe epilepsy who were denied access to cannabis oil, as our health editor, hugh pym, explains. harry, who is ten years old, has epilepsy. he's energetic enough now, but his sometimes daily fits were so severe that his parents feared for his life. he has every type of seizure imaginable. we spent days where he just lay on the sofa. he didn't go to school. harry was dying before our very eyes. but after taking cannabis oil, available in some shops, the fits became a lot less frequent and there was a big improvement in his condition. from today, more effective medicinal cannabis can be prescribed on the nhs, though only to certain groups of patients — children with rare severe forms of epilepsy, adults vomiting because of chemotherapy and some adults with multiple sclerosis. only a small number of specialists, rather than gps, will be able to prescribe medicinal cannabis and there is continuing research into the long—term risks. some experts think it is best to wait for the research to be completed before extending the range of patients who can be treated. it's really important that doctors don't cause any harm to their patients and don't cause side effects. we know that cannabis related products do have potential side effects. that's why it is right that it a gradual and slow incremental process going forward now. she was such a happy little girl. emma's nine—year—old daughter teagan has been in hospital for several weeks because of repeated epileptic seizures. i haven't had a hug off her for over two weeks now. her personality is just going. she was told teagan would qualify for the most effective medicinal cannabis. but then when the guidance came out late yesterday, doctors said it wasn't possible. i'm absolutely gutted. absolutely gutted knowing there is a product that can help and watching my daughter suffer every day, it is horrible. it's really horrible. harry doesn't qualify either and his family, like teagan‘s, feel a battle to legalise medicinal cannabis has been won. but the reality hasn't matched up, with the possible benefits still not accessible. hugh pym, bbc news. the time is 6:15pm. our top story this evening: a criminal investigation is launched into how a prominent businessman, arron banks, funded a pro—brexit campaign during the eu referendum. from the streets of south africa, we talk to two djs at the forefront of a new type of house music taking europe by storm. coming up on sportsday on bbc news: eddiejones reveals the england side set to face south africa in the first autumn international at twickenham this weekend. this week we've been looking at the impact that the food we buy has on the environment and how people can reduce the impact by choosing food that's more sustainable. elaine dunkley has spent time with one family in west yorkshire who are trying to change their shopping list so that it's friendlier to the planet but still within budget. the edwards family from calverley are, like most, busy. i can put away the cereal. when it comes to eating, cost and convenience are important and now they're trying to shop in a way that's more sustainable. today i did buy a couple of different things, so usually we would get the everyday essential ones because a pea's a pea but they were next to the british ones so itjust made me think about, well, where have those peas come from? food expert duncan williamson has helped the family shop for more sustainable ingredients. the biggest surprise most people have is we're actually saying you don't have to give up anything. you don't have to go vegan or vegetarian. and now there's extra help in the kitchen. top chef chantelle nicholson runs restaurants in london. her ethos is food should be delicious and sustainable. the edwards family are big meat eaters, so can she persuade them to eat more sustainably with quick affordable recipes? time to get rolling, so we are having meatballs, in case you've not realised, so in here we've got half the amount of mince that we would normally use, so they're full of lots of delicious tasty things that could also provide a lot of nutrition, such as fish balls, nuts, pulses and grains, so at the end of the day we'll have something that's super nutritious and should be super delicious. it's very, very nice. yeah, i think it adds a lot with the vegetables. it is gorgeous. what's on our plate has an impact on the planet. for the edwards, it's a case of tweaking what you're eating. so it'sjust taking a moment to say hold on, how many times are we going to eat meat this week? and if you can even reduce it by a third, the impact is going to be huge. what have you learned from the experience? i was really shocked at the link between what you buy in the supermarket and the impact on livestock, the environment, on water tables, the whole thing, it really opened my eyes to the whole cycle of food production. it definitely should be something that's more common knowledge for people because if you don't know, then why would you be motivated to change that? eating sustainably hasn't had a huge impact on this family's budget or time but it has made a significant difference in the way they think about food. who's got the sweet tooth, then? mum. elaine dunkley, bbc news. the bank of england has decided to keep interest rates unchanged, at 0.75%. the governor of the bank of england, mark carney, said brexit uncertainty was preventing some firms from investing. but he also said there could be a rebound in investment if the uk manages a smooth exit from the european union. the bank's latest forecasts suggest that rates could rise to 1.5% over the next three years. our correspondent andy verity is here. so, andy, there's an upbeat message here but also a warning? the upbeat message is as you said, although businesses are not investing right now it's because they are holding back amid uncertainty that if theresa may get a deal, then that money will probably be spent and the economy is currently running at full capacity so currently running at full capacity so if you hit the accelerator any more, if there is excess spending you get inflation so then they have to raise interest rates. historically it is still quite low but twice what the official bank rate is at the moment but it all depends on the deal being struck, and if one isn't struck they are warning there could be a shift so if we are not importing from the eu or exporting as much, companies here may shift their production to other groups, and while that is going on it could impair the productive capacities of uk companies and that could mean shortages and higher prices but they don't think that's likely. leicester city's manager, claude puel, says it was the decision of his players to to go ahead with their premier league match this weekend. it will be the team's first game since the helicopter crash which killed five people including the club's owner. mr puel said the result of saturday's game against cardiff was not important. this has been, without doubt, one of the hardest weeks in the history of this football club. the tragic loss of five lives has left us all numb with sadness and shock. the american gymnast simone biles has made history by becoming the first woman to win four all—around world titles after winning gold at the gymnastics world championships in doha. it was the 21—year—old's first international competition since the rio olympics, where she won five medals, four of them gold. but today's record didn't come without some nervous moments, as our sports correspondent natalie pirks reports. the all—around final requires a jack of all trades. all eyes on simone biles. there is no more complete gymnast than her but the olympic vault champion got off to a shaky start. they gasp from the crowd gave hope to her rivals. even battling kidney stones, she helped the usa to tea m kidney stones, she helped the usa to team gold on tuesday but the bars have always been her nemesis. after an18 have always been her nemesis. after an 18 month break, she was back on top, but the beam allows no room for error. little stumbles could be forgiven but not a major fall. simone biles‘s attempt to become the first woman in history to win four all around world titles was going to the wire but on the floor she reigns supreme. the wire but on the floor she reigns supreme. wearing a keel ribbon in honour of sexual abuse survivors, this year, she watched her former tormentorjailed for the abuse of women in the team. i could have put ona women in the team. i could have put on a better performance because i'm not the gymnast that you saw but we all have mistakes and it's how you get up and prove yourself. not all superheroes wear capes. some wear gold. natalie pirks, bbc news. it's called qum and it's a type of south african house music that's becoming increasingly popular in clubs across europe. this weekend it's being recognised at mtv‘s european music awards. distruction boyz from durban are two djs at the forefront of the scene who've been nominated for best african act. nomia iqbal went to meet them. a warning — her report contains flashing images. the music that we make is 100% authentically south african music, not made anywhere across the world. it's called qum. it comes from the streets of durban. destruction boyz have sold millions of records, won multiple industry awards and they've done it by themselves with no major record label. que and goldmax were born here in the township of kwamashu, which has one of the highest murder rates in south africa. it was in this house where they created their first album on an old pc. what is it about kwamashu that inspires that sound that you guys make? it has to be the struggle. yeah, the struggle, yeah. crime is at an all—time high. people, if you can show them this came from kwamashu, they won't believe you. why? because kwamashu isjust like a township, it'sjust the hood. with no major record label behind them, destruction boyz have relied on social media and local taxis playing their music to get noticed. but despite their tiny set—up, this summer destruction boyz performed at one of europe's largest dance festivals. they've also played gigs in london. to see the music go from here to there, it's pretty awesome. it's amazing! yeah. it's amazing! we're still getting, who are you, what's going on? so it's like that but we're happy that we came with something truly south african and authentic and people fell in love with it. in their own studio, que and goldmax are in control of their sound. having already gone gold and platinum, it's the reason why they haven't signed to a major record label and they say they don't want to be exploited. ownership is a very cheap thing in south africa because a lot of people don't own a lot of things that they do for themselves, so we want to own everything that we do. they want to perform in ibiza, where the world's top djs play, and follow in the footsteps of famous south african artists black coffee and euphonik. euphonik has been in the music industry for more than 20 years working independently, but even he admits it has its limitations. it's definitely difficult, it's not the easiest thing in the world and the thing about the music business is that you can be a musician that really loves music but ultimately at the end of the day this thing is a business. if you're an artist in south africa, you don't really need a major but if you've got global ambitions, then you definitely do. for many south african artists, keeping their sound true to its roots is hugely important but to make the biggest impact with their music, it means they may inevitably have to give up some control. nomia iqbal, bbc news. time for a look at the weather. here's alina jenkins. we have a front moving east across the country today, a friend had plenty of sunshine, a beautiful afternoon in cumbria but further east we are still hanging onto the rain but in the next few hours that will clear away and behind it mainly clear skies and dry overnight, just a few showers in western isles of scotla nd a few showers in western isles of scotland and are sea coasts, a cold night, temperatures close to freezing, some spots getting down to _5’ freezing, some spots getting down to —5, fairly mild across the channel islands but for most are frosty start to tomorrow, through the day the cloud will build from the west, but for much of daylight hours it should be dry, after that cold start temperatures recovering at this area of rain arrives into northern ireland and western scotland in the evening, the wind strengthens but if you have fireworks plans tomorrow evening for much of the uk it should be but winds will be strengthening, all done to this area of low pressure, windy conditions on saturday, outbreaks of rain initially across scotland and northern ireland but then pushing into wales and england, the further south and east you are, more sunshine but a mild day, that rain slowly clears from northern ireland in the evening but it will be a windy end to saturday with gusts up to 65 mph. that's all from the bbc news at 6pm, so it's goodbye from me, and on bbc one we nowjoin the bbc‘s news teams where you are. hello. this is bbc news with julian worricker. the headlines: the sports minister tracey crouch has resigned following a row over perceived delays to the government's introduction of changes to the maximum stake on fixed odds betting terminals.