This is F-3556, the RE8 at the Imperial War Museum, Duxford.
The machine was built in 1918 and made it as far as France, but saw no service. It was given to the IWM in 1920. The hangar is very light and airy, so the photos are mostly without flash, in natural light. The finish is rather matt, although it seems in good condition. The only other RE8 to have survived is a Hispano-suiza engined version in Brussels, which having a heavily louvered cowling enclosing the engine looks completely different.
These are photographs taken by Paul Thompson.
During summer of 2003, the RE8 was being rebuilt in a small shed beside the main display hangars. Knut adds: the doors are open so one can peek inside when there is someone from the staff present.
The photos were taken at the Royal Army and Military History Museum (Musée Royal de l'Armée et d'Histoire Militaire / Koninklijk Museum van het Leger en de Krijgsgeschiedenis) in Brussels , Belgium.
Mike adds: Like the Soesterburg museum in NL, this is another museum that lets you get pretty close to the airplanes without much trouble.