Every second citizen of Cameroon and one Greek in 10 has paid a bribe over the last 12 months, according to one of the biggest international corruption surveys, to be published today.

Transparency International (TI), the Berlin-based anti-corruption monitor, found corruption remained a serious problem in several eastern European countries that joined the European Union in May, with 32 per cent of Lithuanians and 21 per cent of Czechs admitting they or a member of their household had paid a bribe in the last year.