mgb
The gear is not being retracted or extended. That is the normal 'tilt' which, as well as allowing the gear to fit into the bay, also puts the aircraft into ground mode when it untilts on landing. Ground mode, amongst other things, allows full spoiler extension rather than the limited extension in flight. The aircraft has flap 30 set, so gear retraction in this configuration would cause a loud horn to sound on the flight deck.
Having seen many photos of this airfield, and flown with people who have operated there, I have no reason to believe that it is a fake.
Airclues