In August 2018, the following were based in the UK (required to operate the schedule, not including stby aircraft):
STN - 50+ (I'm sure someone on here can give an accurate number?)
MAN - 12
EDI - 8
EMA - 9
BHX - 4
LPL - 4
BRS - 4
LTN - 4
LBA - 3
GLA - 2 (based now closed)
PIK - 3
BFS - 2
BOH - 1
In 2019, SEN will be a new 3x aircraft base.