The flight was operated by a First Choice 757-200 G-OOBJ. There was a Thomas Cook 757 on the ground at the time sat on the west ramp (G-FCLA I think). The flight left around 30mins late.
I had a feeling it would be the FCA 752 when I went up to level 13, as the only Thomas Cook aircraft at T1 was an A332 and 753. I had a feeling when I saw the FCA 752 on Pier C it would be that aircraft.