David Cameron, the British prime minister, has come under pressure to reduce the age of eligibility to vote in the referendum on EU membership to 16, as he began in earnest a push to secure sufficient change to Britain’s relations with Brussels to persuade voters to back continued membership.

TONY BLAIR redrafted an IRA statement at the prime minister’s country residence Chequers in the presence of Sinn Féin president Gerry Adams in 2003, a senior aide to the former British prime minister has revealed.