Tuesday's National Newspaper Front Pages

THE PAPERS' TOP STORIES

:: Financial Times

The NHS is facing a larger black hole in its finances than health leaders and politicians have expected because of a sharp fall in productivity.

:: The Daily Telegraph

Conservative supporters who have defected to UKIP should "come home" and support the Tories during the General Election, "averting the danger of a Labour government", David Cameron has urged.

:: The Guardian, i

Tony Blair will step into the spotlight on the election campaign later today, and claim that Britain would endure a period of instability if David Cameron gets the chance to stage an in-out referendum on the EU.

:: Metro

Teachers have claimed they are being used as "stormtroopers" in the fight against Islamic extremism, as they are under pressure to spy on pupils.

:: Daily Mail

In a TV interview, Edward Snowden has revealed he didn't read all of the GCHQ and NSA files before leaking them in June 2013.

:: The Independent

David Cameron is yet to approve the Conservative Party manifesto for the General Election, amid concerns that it doesn't put a positive message across to voters.

:: The Times

A relative of Britain's youngest convicted terrorist is feared to have fled to Syria in a bid to join Islamic State fighters.

:: Daily Star

Two girls who are allegedly at the centre of a "love storm" with former One Direction band member Zayn Malik are to enter the Big Brother house.

:: Daily Express

Regular, vigorous exercise is a simple way to achieve a long and disease-free life.

:: The Sun

A murderer has been filmed on a mobile phone, inside prison, dancing to rap music and drinking alcohol - prompting outrage from his victim's fiancee.

:: Daily Mirror

Dozens of seals have been shot dead on Britain's coasts.

:: Watch the Press Preview on Sky News every evening at 10.30pm and 11.30pm. Tuesday night's reviewers will be Stig Abell, managing editor at The Sun, and the journalist Jenny Kleeman.