Ten Things You Need to Know Today: Friday 15 Apr 2016

1. EU referendum campaigning officially begins

Today is the first official day of campaigning for the EU membership referendum on 23 June. The official In and Out campaigns have been named by the Electoral Commission and they, and Britain's political parties, can now start spending the funds they have been allocated for their media campaigns.

Remain-voting City lobby group calls for 'dramatic Brexit U-turn'

2. Panama Papers: EU 'big five' crackdown

Britain, Germany, France, Italy and Spain have agreed to share information on the secret ownership of businesses and trusts in response to the revelations about tax avoidance in the Panama Papers. The EU's five biggest economies say the agreement will make it harder for people to avoid paying tax.

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IMF: Information sharing plan as Panama Papers fallout continues

3. Clinton and Sanders slug it out in New York

White House hopefuls Hillary Clinton and Bernie Sanders last night held their most fiercely acrimonious TV debate yet in front of an audience in Brooklyn, New York. The two main contenders for the Democratic nomination clashed on banks, gun control and the minimum wage – as well as each other's fitness for the job.

4. Anfield holds final Hillsborough memorial service

The final Hillsborough memorial service to be held at Anfield has taken place in Liverpool. A minutes silence was held across the city at 3.06pm, the time that the FA Cup semi-final between Liverpool and Nottingham Forest was abandoned on 15 April 1989 because of a crush that killed 96 fans. Earlier this year the victims' families agreed that this year's service would be the last.

Klopp feels the power of Anfield as Liverpool make history

5. Five arrested in UK anti-terror raids

Five people from Birmingham have been arrested on suspicion of terror offences after an investigation that involved MI5 and Belgian and French authorities. Four were held in Birmingham on Thursday night and a fifth was detained at Gatwick Airport early on Friday morning. Police said they had no information that an attack on UK soil was imminent.

6. Mars tells customers not to use its products every day

Mars, the owner of Dolmio and Uncle Ben's, is to label its sauces and meal kits for "occasional" consumption to raise awareness of the high levels of salt, sugar and fat they contain. The slogan, "When's your Dolmio day?", will function as a reminder that the product should not be eaten every day. Mars is also overhauling its products to make them healthier.

Dolmio warns customers not to eat its sauces every day

7. PJS injunction case heard at Court of Appeal

The result of an appeal against an injunction banning a paper from reporting a "well-known" man's extramarital activities will be known on Monday. The Sun on Sunday said the information had been published outside England and Wales and was available online. The man in question, who can only be referred to as PJS, is married to another celebrity, YMA.

Who is PJS? Football stars named as love cheats in US

8. Radiohead to release new album in June

British rock group Radiohead will release a new album in June, their manager says. The recording will be the band's first album since 2011's King of Limbs and will sound like "nothing you've ever heard", Brian Message added. The band have not confirmed the news.

9. Crowd control for bluebell woodland

The National Trust is introducing crowd control measures for the large numbers who want to walk among the bluebells in Dockey Wood at Ashridge, Hertfordshire. Thousands of people visit each spring to see the flowers, which will now be protected by rangers and a £3 charge.

10. Briefing: Why the battle for Aleppo is so important

Fighting has broken out in the Syrian city of Aleppo amid reports that government forces are planning to recapture the city from rebel groups. If confirmed, it would signal the end of a partial ceasefire that has been in place since February. Taking the city would give the government of Bashar al-Assad control of Damascus, Homs and Aleppo - the main population, cultural and economic centres of Syria.

US and Russia spar over vetoed Syria sanctions