Apart from stock file footage the scenes in London are clearly not filmed in London. Efforts made such as placing phone boxes (although in places there would never be phone boxes) are undone by exposing multiple car registration plates that are most definitely not British. The positioning shot of Harrods followed by scenes supposedly in Soho defy belief as they are too far distant from each other - and the suggestion that he can get to the fish and chip shop in Camden High Street from central London in just a few minutes when he wakes up late is just daft.