EX-Pompey footballer Sol Campbell has indicated he is still considering a political career - and failed to rule out seeking to be the Conservative candidate in the plum London seat being vacated by Sir Malcolm Rifkind.

The former defender, who made his name in the capital playing for Spurs and Arsenal, has been courted by the party and recently lunched with party chairman Grant Shapps amid suggestions he could run for London Mayor.

Asked if he would seek to be selected for Kensington following Sir Malcolm's decision not to stand amid a cash-for-access controversy, Campbell told the Sky News Murnaghan programme: ''Step by step. I think about a lot of things.''

The sports star, who went on to captain Portsmouth's 2008 FA Cup winning team, backed David Cameron's promise of an in/out referendum on UK membership of the European Union so long as voters ''know the facts and figures''.

''It's about going in there and getting the facts and figures and making sure the British people know what's happening,'' he said.

''I look at the eurozone and I look at Germany - the only reason that Germany loves the euro is because they make so much money because the Mark was so expensive.''