Some boundaries have been altered since 2005, meaning some areas have gained voters while others lost them.

BBC: Broadcasters' adjusted boundary figures explained

But the left-hander lost Test team-mate Brendan Nash soon after, while all-rounder Dave Bernard crashed three boundaries before inside edging an attempted cover drive into the gloves of Foster for his third catch of the innings.

BBC: Cook shines as Windies struggle

This is because the election in England and Wales is being fought on the 1997 constituency boundaries, and in the intervening years Labour's (mainly urban) seats have lost population, while the Tory (mainly suburban) seats have gained population. (The next revision -which takes place every 8 to 12 years - will come into effect in 2007, while boundaries have already been revised in Scotland).

BBC: THE CLAIM