This is the scene live in hong kong. Tens of thousands of demonstrators are now on the streets in the latest challenge to beijing. Iran hoists its flag on the masthead of the captured uk registered tanker in the gulf. Irish golfer shane lowry is on the verge of claiming victory at the open at royal portrush. Full details coming up in sportsday at 6 30pm. The chancellor of the exchequer, Philip Hammond, says hell resign this week if borisjohnson becomes the new conservative leader and Prime Minister. Mr hammond says he doesnt agree with mrjohnson over brexit and thinks its unlikely britain will get a deal agreed with the eu by the current leaving date of october 31st. Heres our Political Correspondent nick eardley. If theres one thing these two can agree on, its that delivering brexit has not been an easy ride. Have you got the green light . I havent got a green light. Oh, the story of my life. Borisjohnson is odds on to become the Prime Minister on wednesday, but the chancellor cant sign up to his brexit strategy. And so this morning, live on television, he announced that he plans to quit. Assuming that borisjohnson becomes the next Prime Minister. I understand that his conditions for serving in his government would include accepting a no deal exit on the 31st of october. That is not something i could ever sign up to. Its very important that a Prime Minister is able to have a chancellor who is closely aligned with him in terms of policy, and i therefore intend to resign to theresa may before she goes to the palace to tender her own resignation on wednesday. We dont know for sure that borisjohnson will beatjeremy hunt. Well find out on tuesday. But its notjust the chancellor getting ready for Prime Ministerjohnson. Others are ready to quit, too. Just like theresa may, the next pm will have a divided party in parliament. Theyll also face a familiar issue here, the border between the republic and Northern Ireland. Both men say they want to take out the controversial backstop, but the Irish Government isnt having it. If the approach of the new british Prime Minister is that theyre going to tear up the withdrawal agreement, then i think were in trouble. I think were all in trouble, quite frankly, because thats a little bit like saying, either give me what i want or im going to burn the house down for everybody. So, no deal remains a possibility. He says it will have a significant Economic Impact and mean checks on the island of ireland, but he says itll be britains fault. Not so, says mrjohnsons team. They want to prepare for leaving without a deal, but still think a new one is possible. The deal, as it stands right now, is dead, and theres no point in trying to twiddle or fiddle it. The reality is that there are huge elements in it which simply are inoperable in the uk. The eu is a master at hard nosed negotiation, and i think we got taken for a ride. As we now know. Well, we got taken for a ride because we werent. There will be a new boss in here on wednesday with their own ideas about how to get a better brexit offer, but many of the challenges will be ones weve got very used to. Nick eardley, bbc news. And nick explained why mr hammond decided to announce his resignation plans now and what that means for the next Prime Minister. Philip hammond, a man whos been in government since the coalition years, for nine years at the heart of government, always seen as a safe pair of hands, fairly mild mannered and loyal, has just dropped this bombshell on a sunday morning live on television, for the simple reason that he is really despairing about the way that it looks like the conservative party is going to go under borisjohnson. He thinks that no deal brexit would be a calamity, and he isnt prepared to sit back and watch it happen. Now, there is an element of being pushed before. Sorry, jumping before he was pushed, for the simple reason that he wasnt going to stay in Boris Johnsons cabinet anyway. Boris johnson wouldnt have wanted him there. The same is true for some other cabinet ministers, but theyre clearly trying to get out with the maximum impact to say to borisjohnson, we think youre getting this wrong. Ok, there are, though, rumours that we could see more people leaving, stepping down. Whats that going to do to boris working majority . Well, youll certainly see more ministers refusing to serve under Boris Johnson. We know that the justice secretary david goff is going to be one of them. There could be two or three more cabinet ministers who say we wont serve under borisjohnson. Morejunior ministers on top of that. The big challenge to borisjohnson will come if, as you say, people decide to actually leave the conservative party and eat away at his working majority, because that doesntjust impact brexit, it impacts his whole ability to run a government. And he could be in a situation within the next few weeks where a wafer thin working majority is ebbing away. Theres the by election in wales next week as well, which again, the conservatives could lose a seat and that wafer thin working majority could be even slimmer. What does it all point to . It points to borisjohnson finding the first few months of government extremely hard. All working towards that 31st of october date, when somehow, he has to try and persuade parliament to get on board with whatever he decides to do. Ok, and then we were hearing there from Simon Coveney as well, just to add to that increasing and very busy intro. Just remind us what he was saying. Well, youve got, in many ways, with mrjohnsons entry, exactly the challenges theresa may faced. A rebellious conservative party and a parliament that is deeply divided over brexit, but also a European Union that is holding firm. So far, there is no sign that the European Union is willing to revisit the backstop, the thing that both mrjohnson and jeremy hunt have said needs to go. There is no sign that europe wants to do that. Will it . Might it budge at some point in the face of no deal . Possibly, but at the moment, theres no sign of that, so borisjohnson, if he does win, will enter downing street on wednesday, struggling to see how he gets something through parliament, but also knowing that europe, yes, it says, come and speak to us, yes, we want to be your friend, yes, we want to sort something out, but were not going back on the withdrawal agreement, so theres a lot to do. The owners of the british flagged tanker seized by iran on friday says theyve put in a formal request to visit the crew members who were captured. The stena impero has been impounded with all 23 crew aboard in the port of bandar abbas. Meanwhile, a recording has emerged of Radio Exchanges between a Royal Navy Warship and irans revolutionary guard moments before the tanker was seized in the strait of hormuz on friday. Irans ambassador to the uk says any further escalation of tensions between britain and iran would be unwise and dangerous. Daniela relph reports. The radio messages came ahead of the Iranian Revolutionary guard taking over the stena impero, descending from a helicopter to the deck of the tanker. A british warship, hms montrose, had been alerted, but failed to reach the ship in time. It did, though, embark on a Radio Exchange with an iranian patrol boat. The swedish based owners of the tanker insist the vessel did not breach any regulations. It says its priority is protecting its multinational crew. Translation we followed the ship every second and every minute, and the tanker never Left International waters. We understand that the crew are in relatively Good Condition, but its a stress situation for everyone. The British Government says its now looking to its International Allies to help ease the tension. Our first and most important responsibility is to make sure that we get a solution to the issue to do with the current ship, make sure that other british flagged ships are safe to operate in those waters and then look at this wider picture of actually having a working, proper, professional relationship with iran. But this is a hostile act, lets not dodge away from that. In this deepening political and diplomatic row, there are still 23 crew members on a british flagged ship who remain prisoners of irans revolutionary guard. Daniela relph, bbc news. Henryjones is a journalist who specialises in defence and interNational Security. He told us how he sees the situation being resolved. The first thing, i think, to say is the uk is not necessarily keen to join a Coalition Just with the United States to solve this. It was reported earlier today that that had been on the table last week. And the london concern is that siding with the us over this and allowing them to help us through this situation almost validates the us position on the nuclear deal. So thats the first issue here. How you get through it is a difficult question for london to answer. A number of options have been drawn up, as Philip Hammond said, sanctions are on the table. Tobias ellwood there as well. And i understand that military options have been drawn up last week. The understanding is the ministry of defence presented a whole raft of options to downing street and they need the green light, they need a go ahead from their political masters to do that, and so its now up to, if it is to be resolved, it is now up to the politicians to decide how to do that. And if that involves the military in the region, that will be their call to make, and they will no doubt enact that. Well, admiral lord west has said that more needs to be done, there has been a call for more investment in the navy. How realistic do you think it could be for military escorts to accompany tankers through the strait of hormuz . Its not inconceivable. Lord west is entitled to his comments, and its worth adding that the uk has a very significant permanent presence in the region. It has its four mine hunters, it has hms montrose, hms duncan en route, there are other auxiliary ships again en route. It has a substantial presence in the region. It needs. Im not entirely sure i buy this idea that we lack the capability to protect our shipping. We have this capability to protect the shipping. What more needs to be done . I think its hard to say. But saying that we lack the capability to protect shipping is not particularly helpful. And, yeah, as you mentioned, there is this prospect that we could have convoys moving through the strait. We could have set times where the 30 british flagged ships that pass through the strait every day, they can go through at a set time, they can be escorted, etc, but that is difficult to achieve. Henry, iran earlier described whats taking place as reciprocal actions, hinting that this is just tit for tat. Surely it is not as simple as this, it it . This is brinkmanship. How far do you think iran is willing to go . I think i agree with you it is not a simple as tit for tat. The 4th ofjuly, the Royal Marines off the coast of gibraltar seized the iranian tanker, and it hasnt yet been released. They can argue it is just retaliation for that, they can spin it however they like, and of course theyre going to spin it how it benefits them. They have an agenda here. I think an interesting point to make is what iran wants to get out of this. And how their actions, the precedent that their actions set. If they can get away with this, if they can seize a british flagged tanker in the strait of hormuz that was exercising innocent passage, that it was going about its usual business, if they can do that and if they can get away with that, it sets an incredibly dangerous precedent, not unlike the precedent which has been set in the South China Sea by china flouting International Law upheld by the united nations. Our correspondent tom bateman is following developments from the port city of fujairah, in the united arab emirates. Well, in terms of dialogue, we know that the uk government had summoned the ambassador in london over the weekend after the incident on friday, so theyve been certainly talking to each other. We know that jeremy hunt, the foreign secretary, spoke to his counterpart in iran, Mohammed Javad zarif, over this. So interestingly, in the last hour, mrjavad zarif said, tweeted about all of this, and said, that donald trump had failed to lure other people into what he called the war of the century, and now it was up tojohn bolton, he said, his National Security adviser, who he says, is turning his venom against the uk in hopes of dragging it into a quagmire. So, clearly, we have another ramping up of the rhetoric over all this. In the meantime, that standoff continues. You have those 23 seafarers who left their anchorage here on friday, and intending to head west to a port in saudi arabia, routine voyage, they are in the other direction now, still off the coast of iran, out of contact with their family out of contact with the uk based company that runs their operation. So, no movement at all other than the company that owns the ships says that it has heard that the seafarers are all in good health, but of course it has no word on what will be the fate of its ship. Some sporting news very quickly. Irishman shane lowry has won the open she openjb ship at royal port rush. There have been violent clashes in hong kong following another mass rally against the authorities. The Police Used Tear Gas and pepper spray and charged protesters with batons. The demonstrators threw objects at police lines. The unrest came after a largely peaceful demonstration that organisers say attracted 400,000 people. The initial protests, which started two months ago, were directed at an extradition bill, but there are now calls for wider political change. I spoke to our china correspondent Stephen Mcdonnell a short time ago, and he sent this update from the scene. This is the chinese Central Government headquarters. It has been graffitied by protesters, including here referring to president xi jinping asa dog. It was always going to call for a tough response, and this is the response. Riot police have come in to clear people out of this area. And this is now whats happening every weekend in hong kong. As you can see, these ordinary people have been caught up here by the riot police, being asked to move. And of course the other half of the equation is the Pro Democracy Movement which started off opposing this very unpopular bill allowing for extradition to mainland chinese courts controlled by the communist party, which has now morphed into something very different. Now we have to move because the police are coming that was Steven Mcdonnell they are speaking to us earlier. The headlines on bbc news Philip Hammond says hell resign as chancellor on wednesday if borisjohnson becomes Prime Minister. Irelands foreign minister warns the uks next Prime Minister that if they tear up the brexit withdrawal agreement, were all in trouble. More violent clashes in hong kong. Police fire tear gas at protesters during another huge pro democracy rally. 0k, ok, lets find out a bit more about what has happened at royal port rush. We are going to speak to our correspondent who is there. People we re correspondent who is there. People were waiting for this, great news for the irishman. The celebrations really have started. A party in portrush this evening. Shayna lowry is the 2019 open at champion. The irishman from county has won by six strokes also be let overnight and wish for shots clear going into the final day. He has never really been challenged after all afternoon. He was looking very strong indeed. It was looking very strong indeed. It was an extraordinary round from him yesterday that put him into this position. Tommy fleetwood, the englishman who has played with him all afternoon was only really the man who ever looked at pushing for that labour in the end of six strokes the winning margin. I dont think the open championship is ever seen seems like we have witnessed over the last 20 minutes. Shane lowry and is one of the most popular champions this greatjimmy smith ever seen. Champions this greatjimmy smith ever seen. 20 deep on the greens and more akin to a football crowd with chanting, cheering, shouting, the stewards having their work cut out keeping the spectators off the course. Usually emotional scenes. Keeping the spectators off the course. Usually emotionalscenes. He sought that final plat and we saw his father and saw his wife and his daughter and everyone looked hugely emotional and it was an extraordinary scene. This is a historic championship. We have been saying it all weekend that this is the first time the open shipping ship its come back to Northern Ireland for the First Time Since 1951. Almost 70 years they have waited to have an open championship back on the island of ireland. And i think having an irish winter was perhaps for many a fairy tale too far. But that is what has happened this evening in the last 20 minutes. Shane lowry the champion golfer of 2019 poster but has been an absorbing composition. A worthy winner will get his trophy in the next few moments but the party really beginning to start here in portrush. Fantastic news. Thank you very much, adam. A 15 year old boy has been shot in Coventry City Centre. Police say it happened last night.