In a Sunday Telegraph article today, Mr Cameron insisted that only the Conservatives can deliver reform in the EU and a referendum.
Speaking about Conservative party rivals for the European election, David Cameron referenced Dad's Army character Private Frazer:
There are politicians who refuse to be upbeat about Britain.
To them, pessimism equals patriotism.
They insist that our best days are behind us and that everything is bound to get worse.
Like Private Frazer politicians they're perennially crying out that 'we're all doomed'.
More top news
Another disappointingly breezy and cool day for late July and a similar theme tomorrow.
The son of a coke plant foreman has won the right in principle to seek compensation for his father's death from respiratory problems.
A man from Northampton has admitted climbing on to the roof of Parliament and causing £5,500 of damage in an eight-hour police stand-off.