Ten Things You Need to Know Today: Monday 23 Jan 2017

1. May was told of Trident missile test

Prime Minister Theresa May was told about last year's Trident missile test when she came into office, Downing Street has confirmed. The news comes amid claims that a test firing from HMS Vengeance went, shortly before MPs voted to renew the nuclear weapons system. Defence Secretary Sir Michael Fallon has told MPs he had "absolute confidence" in Trident.

The pros and cons of Trident

2. 'Allo 'Allo star Gordon Kaye dies

Actor Gordon Kaye, best known for playing cafe-owner Rene Artois in BBC sitcom 'Allo 'Allo!, has died aged 75. Kaye starred in all 84 episodes of the series that ran from 1982 to 1992, and returned for a one-off special in 2007. He also appeared in more than 1,000 performances of the stage version of the show, set in Nazi-occupied France.

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3. Freezing fog disrupts travel across southern England

Freezing fog has hit flights at Heathrow and London City airports and may see cancellations at Gatwick and Stansted. Forecasters warn temperatures will be below zero across much of the south of England during the rush hour this morning and motorists are warned to take more care when driving.

4. Gambia: Jammeh 'plundered state coffers'

Yahya Jammeh, the former president of The Gambia, stole £9.2m from the state in his final weeks in power, an adviser to his successor, Adama Barrow, has claimed. Jammeh flew into exile in Equatorial Guinea on Saturday night after initially refusing to give up power. Barrow plans to return from Senegal "soon".

5. WikiLeaks calls for hack of Trump's tax returns

Whistle-blowing website WikiLeaks has called on hackers to access US President Donald Trump's tax returns so it can publish them online. Trump repeatedly promised to release details of his tax affairs while campaigning to be president but has now said he will not, breaking a 40-year White House tradition.

Trump travel ban: Judge expands definition of relatives

6. Burnt toast and roast potatoes 'can cause cancer'

Burnt toast, crisps and well-browned roast potatoes could increase the risk of cancer, health officials say. The Food Standards Agency have advised people to eat less acrylamide, a natural by-product of some foods produced when cooked at high temperatures, as studies on mice have shown that high levels can cause cancer.

Crunchy roast potatoes are cancer risk, watchdog warns

7. Ronnie O'Sullivan wins record seventh Masters title

Ronnie O'Sullivan has won the snooker Masters title for a record-breaking seventh time, coming from behind to beat Joe Perry 10-7 in London. He dedicated his victory to the late Paul Hunter, a three-time Masters winner who died of cancer in 2006. O'Sullivan now moves ahead of Stephen Hendry's six wins.

8. Samsung: Battery fault caused Galaxy Note 7 fires

Samsung says two battery faults caused its flagship Galaxy Note 7 phablet to burst into flames. The original battery was squashed into its case, causing it to short-circuit, and the replacement was not properly insulated, said the company. Both batteries were made by third parties.

Samsung to launch 'Fan Edition' of failed Note 7

9. Actor shot dead on set of music video

An actor has been shot dead in Australia while filming a music video for a hip-hop group. The 20-year-old suffered the fatal injury in a bar in Brisbane yesterday afternoon, police say. It is not yet known if the gun involved was loaded with blanks or live ammunition, but several gunshots had been fired during the filming.

10. Briefing: Why Hadrian's Wall was so important

For nearly 300 years, Hadrian's Wall marked the north-west frontier of

the Roman empire. Dating back to at least 122AD, when emperor Hadrian

visited the British Isles, the wall this year celebrates its 30th

anniversary as a Unesco World Heritage Site. Here's what you need to

know about its history.

Hadrian’s Wall: why was it built?