from http://www.eastlondonlines.co.uk/2011/04...av-system/

So it seems that Jim Dowd and Alex Feakes both wish to see AV adopted for the election of MPs, the same system as used to elect the Lewisham and London Mayors. At the very least this will (almost) bring the voting systems for the election of single representatives in line with each other, and in line with the system that is used to elect the leaders of all political parties and unions.