Former British prime minister John Major launched a blistering attack on Sunday on fellow Conservatives campaigning for a Brexit, as rivals traded economic claims in an increasingly tight race for the June 23 vote.

British police on Monday charged two men after 20 people, most of them migrants, were rescued from the English Channel when their inflatable boat began to take on water.

Two children and a woman were among the group of 18 Albanians and two Britons aboard the rigid-hulled inflatable boat, which got into trouble off the Kent coast, southeast England, late Saturday.

Prime Minister David Cameron put aside recent animosity with London Mayor Sadiq Khan to make a joint call Monday for Britain to stay in the European Union, as personal attacks from within his own party intensified.

Cameron told a campaign event in London that he and the new Labor mayor backed Britain's EU membership because "we love our country and we want our country to be the best it possibly can," just weeks after accusing Khan of repeatedly appearing with Muslim extremists.

The British coastguard said it rescued 19 migrants on Sunday from the Channel after their inflatable boat began to take on water.

"The rhib (rigid-hulled inflatable boat), with 19 people on board was located at 2.00am (0100 GMT) and the incident handed over to Border Force," it said in a statement.

If Britain votes on June 23 to leave the European Union, it would be a political earthquake for the EU. Here are some of the potential knock-on effects of a Brexit:

A man who scaled the walls of Buckingham Palace and got into the garden is a convicted murderer, a court heard Friday, as he was jailed for four months.

Dennis Hennessy, 41, repeatedly asked "is Ma'am in?" in an apparent reference to Queen Elizabeth II after being arrested by police on Wednesday night.

British police said Thursday they had arrested a man who climbed the perimeter wall and entered the grounds of Buckingham Palace, the London residence of Queen Elizabeth II.

During the incident, which took place on Wednesday evening, the 41-year-old man was in the palace grounds for seven minutes before he was found by police and arrested on suspicion of trespassing.

The Archbishop of Canterbury Justin Welby has confirmed that he is the illegitimate son of a one-time private secretary to Winston Churchill, after a newspaper reported the discovery late Friday.

Welby, the most senior figure in the Anglican Communion consisting of some 85 million Christians globally, said the news, reported in Saturday's edition of the Daily Telegraph, had come as a "complete surprise".

Cunning gentleman thieves have seduced romantics from the days of Robin Hood through to Hollywood's heyday -- and now London is transfixed by the real-life antics of the "Wimbledon Prowler".

The prolific burglar is suspected of carrying out hundreds of break-ins around one of London's most exclusive neighborhoods, making off with assets worth more than £10 million ($14 million, 12 million euros).

Young people could be the deciding factor in whether Britain stays in the EU, according to an opinion poll released Sunday, which put the Leave campaign in the lead.

The online survey for The Observer newspaper found support for Britain to quit the 28-country bloc was at 43 percent, with the campaign to stay in the EU on 39 percent.