It was most probably the same as all of the of the other ‘props’ they use to destroy in TG and TGT. Due to be scrapped or isn’t air/road safe to use.Hilariously.... the former owner of G-BHRW (one of the light a/c blown away) wasn't best pleased at its fate.
https://forums.flyer.co.uk/viewtopic.php?t=105871