Nick Clegg has said that Britain's economic recovery is dependent on immigrants:
The majority of people who come here work hard and make a contribution. Many have served - and still serve - in our armed forces.
And if every member of an immigrant community suddenly downed tools, countless businesses and services would suffer.
The NHS would fall over. And in a globalised economy, where talent is as mobile as capital, no nation can succeed by pulling up the drawbridge.
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Labour is promising to reverse the Conservative policy of privatisation in the NHS which it claims is creating longer waiting times.
The Queen and senior members of the monarchy will attend services around the world to commemorate the centenary of the battle of Gallipoli.
The Liberal Democrats have proposed to invest an extra £10 million in mental health care for military personnel