Searching a caravan site close to where a 28 year old policeman was killed on thursday night. Thames Valley Police have confirmed that a postmortem examination revealed pc Andrew Harper, died from multiple injuries. Officers said it was consistent with him being dragged along a road by a vehicle. Detectives are continuing to question ten people, aged between 13 and 30 years old, arrested on suspicion of murder. Daniela relph reports. Colleagues, friends and the local community, all came today to pay tribute where Police ConstableAndrew Harper lost his life. Almost exactly a month ago to the day, pc harper was getting married. Now, instead of heading off on honeymoon next week, his wife has to face life without him. A postmortem showed the Police Officer died from multiple injuries. Detectives have also revealed they are still trying to establish why a call to investigate a burglary ended so tragically. The cause of death is consistent with our current belief that andrew was caught between the vehicle and the surface of a road and then dragged for some distance. However, the circumstances as to how andrew came to be out of his vehicle and caught under the suspect vehicle are as yet unknown. The hunt for evidence has continued throughout the day. There have been extended road closures widening the search area. But the police focus has been on the four Houses Corner caravan and mobile home site, run by the local authority in West Berkshire and used by the travelling community. Access to the area has been restricted as the team leading the murder enquiry take charge. The police have now also confirmed that within an hour of the incident on thursday night, they came to this caravan and mobile home site and it was here that all ten people who are currently in custody were arrested. Detectives now have until around midnight tomorrow to question the ten people being held. They are all male, aged between 13 and 30 years old. The death of pc harper has highlighted the dangers officers face in their everyday work. The police loss was today shared by other emergency services. A lot of people say we have sort of a dangerous job, but most of our opinions are that ourjob is nowhere near as dangerous or difficult as the police and the ambulance service. The Thames Valley force has described this as a complex investigation. Both a professional and personal challenge, as they try to solve the murder of a much loved officer who was one of their own. Daniela relph, bbc news, sulhamstead in berkshire. Now on bbc news, the travel show. This is japans most northerly main island of hokkaido. For decades, travellers have been drawn here by its stark contrast to the rest of the country. Its anotherjapan, one that is wild, challenging and remote. Its an incredible experience with distinctive communities. Ive come to meet them and to find out more about the countrys northern frontier. So, if you look out to where im heading, that is japans most northerly point. But on the other side, just a0 kilometres from the japanese coastline is the great landmass, russia. Now that is important because it was russia expanding eastwards that led to japan, 150 years ago, to annex that island and give it the name, hokkaido. The island isnt small. Its around one fifth of japans total landmass but nearly a century and a half after the move to fully populate hokkaido, still only around 4 of japans people live here. Hello, hokkaido but because of this relatively recent migration, the island that was developed by those first japanese settlers took on its own distinct characteristics, making it markedly different from the mainland. One of the immediate issues was how to live alongside what many agree to be the islands indigenous inhabitants, the ainu. Id come to meet this man who recently returned to his heritage following in the footsteps of the ainu. For his ancestors, hunting animals was key to survival. Today this means a fusion of modern and traditional hunting techniques like making use of every part of the hunted animal. When the japanese settled here, the ainu were made to assimilate into japanese society. Their traditional lifestyle was banned and so today, little of their old way of life remains. So, were going hunting . Hunting. Excellent, lets do it. There are bears in this forest, im sticking close to him. So tell me, you go hunting every day . Until recently, those who openly showed their ainu status have faced discrimination. Until recently, those who openly showed their ainu status have faced discrimination. But with the ainu nowjust starting to get recognition injapanese law as Indigenous People with their own distinct language and culture, things are beginning to change. So this is where the deer trap is, yeah . He is clearly disappointed that there isnt a deer in his trap here, so hes adjusting a little bit. Between you and me, im a bit relieved. Look around you and you can see what attracts travellers here. Stunning landscapes, but for young people seeking opportunities, this island doesnt make things easy. Over the years japan has wrestled with economic challenges. Hokkaido has been one of the areas hardest hit. In the previously thriving mining city of yubari, 90 of their population have moved away in 50 years. Demographically, yubari is the oldest city injapan. Probably the oldest city in the world and quite possibly the oldest city, ever. And at 80 years old, and of its residents has achieved celebrity status around japan. Mascots are big business in this country and they dont get much bigger, or frankly, scarier, than yubaris very own melon bear. A nod to the citys famed and prized fruit. Why do you do it . But there is a much more serious side to melon bear to entice tourists to yubari. And maybe in one sense it has worked, because travellers are now coming in. Ruins left by economic turbulence litter japans landscapes and here it has sprung up the hobby called haikyo, exploring the abandoned buildings. Look at this, this is industrial history, isnt it . Just over a decade ago, yubari was declared bankrupt. Those who remained a made to move into a central area of the city living Everything Else abandoned. That places is like the old above powerpla nt, sato san, hosts art projects and helps people to explore. Walking around, im left with mixed feelings because it so powerfully symbolises the decline of a once prosperous place, but i can also see why people love exploring here. There is a mysterious beauty to what is left behind. And making the most of disused buildings isnt just confined to the city. In nearby nayoro, ive arranged to stay in a unique guesthouse. This man worked on trains most of his life. When he stopped working on the trains, he restored an old disused station house back to its former glory. So this used to be a railway line here . In contrast to the japanese mainland, much of the urban life in hokkaido first developed around the rail infrastructure. Some of the old train routes closed with the loss of industry but for some people, this is not the end of the line. This is an incredible experience. On an old disused railway line, very shuddery, but exhilarating absolutely exhilarating its great, pretty good its a world away from this countrys high speed bullet trains, but what a way to experience the nature this is famous for. I have got my sleeper carriage berth, so lets see where the night train takes me. Good night. When the japanese came to colonise hokkaido, they sent former samurai, with a mission to cultivate this island. That is one of the distinct way its developed miles upon miles of suitable landscapes. Now one way to get close to nature as a traveller would obviously be to hike. But there is another uniquely japanese way. This is mochi pounding. What might look to the untrained eye as hitting rice as hard you can with a mallet until it turns squidgy, is in fact a highly skilled and refined process done to create a sweet delicacy known as mochi. I am about to have a lesson from the real expert as to how to be a proper pounder. Ive got to be honest, this is extremely heavy. Stomp, stomp, stomp. Hokkaidos climate is perfectly suited to cultivating the sweet, sticky rice needed for mochi. The region around nayoro has become japans biggest producer. Every year here, local farmers hold a competition to find the best mochi pounders. How do you become a good mochi pounder like you . Here we go. How does hokkaido rate in terms of its mochi . Now then, this is where he risks the use of his hands for the rest of his life. Laughs. Grunts. It takes 100 strikes of the mochi to make itjust right. And its notjust about speed. I am told how you hit it will affect that all importa nt final taste. Now im obviously holding back here for fear of outshining my hosts. Applause. The proof, as they say, is in the pudding. Or the tasting. So lets see what the judges think. Laughs. That was not in the script laughs. I reckon that was a fix. And after all that exertion, it is time for a well earned rest. Im heading south, where my trip comes to an end in hokkaidos main city of sapporo. Its a fitting place to finish the trip around hokkaido, because here in sapporo, they are hosting a Dance Festival that pays homage to the whole islands connection to the sea. Its the fifth largest city in japan, sapporo, and hokkaidos biggest by some distance. And just down there is where the festival is taking place. Yosakoi soran is one of the regions Biggest International dancing competitions. Teams dance to music which is all inspired by the hokkaido folk song soran. Traditionally, this folk song was about hokkaido fishermen. Its come an awful long way since then all soran and one of the teams here with their own take on this dance is. The russians interesting, considering the history between the two nations. Singing in own language. Hats off to them, really good. I had arranged to meet someone who had taken part in this festival many, many times, since she was a child. But finding one dancer amongst 30,000 others was proving a little trickier than i had expected. Hi konichiwa so you are a veteran of soran, of this Dance Festival, you are going to teach me about all of this . 0k. Fantastic. So tell me, what makes this festival unique in japan . This Yosakoi Soran festival in hokkaido, you have two rules. First one, every team, every dancer, have this, naruko. The second rule is that, do you know. Yaren soran, soran. Soran music. Ok, so what youre saying is, even though all the music might sound a bit different, and there is dancing and. Inside each one you have the same melody. How does the melody go . Yaren soran, soran. And while its something that clearly takes a lot of practice, im told that in my case, one hour should do it. Thats what i have to wear . Yes, yes very happy. Ah, 0k. soran bushi plays. A very public Training Session for newbies like me will be followed by a chance to take part in the main festival parade around the streets of the city. Tell me about the first time that you entered the festival, tell me about how it felt for you and what you did . soran bushi plays. Yeah a bit of attitude. Attitude is really important. 0k, from the top. From the top its just dance move, on dance move, on dance move. So complicated many of these dance moves are based on the tasks fishermen performed like dragging nets, pulling ropes and lifting luggage over their shoulders. Cant you tell . 0k. Laughs. That is only the practice. We havent even started the real thing yet i have just had a rigourous workout and lesson, i supposedly know my moves, and now to cap it all off, were going to do the whole dance around the square in front of the crowds. Help thank you to your wonderful teaching, ifeel quite confident now that. 0h, lets go soran bashi plays. The nerves have all gone. Who cares how good you are this is about community. Festival im getting it now are you tired . No yes, because exciting upbeat soran bashi plays. As the festival comes to a dramatic close, my time in hokkaido finishes in what feels like a world away from where it started. I have found a place that has in a short time adopted so much of japanese culture, but within that has found its own way of expressing itself. Who knows what the next 150 years might bring to this unique japanese island. Check that out, that is an act. soran bushi plays. Hello there. Showers will feature in the Weather Forecast over the next few days across scotland, Northern Ireland and the far Northern Ireland. We are closest to low pressure spinning its way around. Southwards we have an area of cloud, a weather front waving around and this threatens to bring rain across southern coastal counties of england before turning across south east england so we could see more general rain here and maybe also working into parts of east anglia. If we do have a bit of rain he it should clear away quite quickly. Increasingly over the next few hours, showers will be more widespread across wales and probably South West England as well. Breezy start on sunday where ever you live, temperatures ten to 11 degrees on account of those brisk winds. If we do see rain to stop the day across Eastern England it clears away quickly but they showers across wales and South West England, will push eastwards with time so no one is immune from seeing a downpour, just the majority of the showers will be further north, working across scotland, across Northern Ireland and into parts of northern england, particularly the north west and also the north west of wales. Temperatures not too bad for england and wales but turning colderfor northern scotland as the winds switch round to a north westerly direction. There is no will blow in showers through sunday night whereas across southern and eastern areas, thatis across southern and eastern areas, that is where the driest and clearest weather will be overnight. The early part of monday morning, temperatures down between ten and 11 degrees. 0n temperatures down between ten and 11 degrees. On monday, the area of low pressure slips away towards scandinavia and we have the showers clumping together across the north west of the country. It is scotland, Northern Ireland and the far north of england which will see the lions share of the showers, some of them thundery in nature. Temperature struggle on monday afternoon and highs will reach 12 celsius also. Not that 16 in edinburgh is impressive either. Further south across england and wales temperatures holding up to high teens to low 20s. From there temperatures begin to rise and towards the end of the week in edinburgh those temperatures should be up to 20 degrees but across southern counties of england it could be won by friday and into next weekend as well. That is your weather. Warm. Welcome to bbc news, im reged ahmad. Our top stories warnings of shortages of fuel, food and medicine if britain leaves the eu without a deal. A leaked government report sets out the aftershocks of a no deal brexit. A suicide bomber targets a wedding reception in kabul. Officials say a number of people have been killed and injured. Hundreds of far right supporters hold a rally in the us city of portland, as police try to keep them away