As Soui says, it's the Aces High 747-236B. (Formerly British Airways G-BDXJ). Been resident at Dunsfold since May 2005. The engines have been removed & it's now used as a film set.
http://commanderbond.net/article/3373I took these photos of it at the Wings & Wheels event back in August last year. Note it's been modified as the fictional Skyfleet for the latest Bond film. The engines are dummies.

Dunsfold was used to represent Miami Airport in the film.