The BA 787s parked up longish term (due to the engine issues) at the BA base, the big maintenance facility adjacent to Hatton Cross Tube Station/Eastern Perimeter Road (which feeds into the Northern) often sported these covers...Haven't been around there for a few months so not sure if any are still parked up.
If they were parked at T5 I have no idea of the story.
Last edited by wiggy; 23rd Sep 2019 at 10:39.