We're not going to tell you how it's done (Paul Daniels has been called to help with the magic!) but needless to say it's all in a good cause.

Cancer Research UK will be the beneficiary of Bernie's run around the London sights and, with the adrenaline still flowing through his veins, he'll still be in fine fettle to help cheer Saints on at the Ricoh Arena, many miles away in Coventry.

Help Bernie raise as much money as possible at www.justgiving.com/berniethedog.