TOM 757s based at BRS
Cloud1,
According to the Bristol Airport apron website the two 757s operating from BRS today are former First Choice machines.
G-OOBD is currently parked on stand 2 inbound from Palma and outbound to Sharm el Sheikh and G-OOBJ is currently parked on stand 3 inbound from Kefalinnia and outbound to Zakinthos.
However, I check the apron website from time to time and have certainly seen other 757s, some former Thomsonfly machines, shown as operating this summer so it seems unlikely that specific aircraft are allocated to BRS for the entire season. Clearly there would be switches from time to time anyway to take account of maintenance and for other operational reasons.