Our work in Madrid continues, with the focus of our attention on the fact that the Spanish authorities believe they have the names of at least six and perhaps as many as eight Moroccans who carried bombs onto the trains which exploded last Thursday.

However, the story is slowing shifting away from Madrid and becoming a wider debate about European terrorism -- especially now that the Metropolitan Police commissioner Sir John Stevens has said a terror attack on London is inevitable.

I´ve been predicting the very same thing for some time. My gut feeling is that the attack will either take the form of a Madrid-style series of coordinated bombings in the capital or a suicide bombing in a major London location (such as Oxford Street or a tube train.)

It´s going to happen -- and it´s just a question of when rather than if.