BHD - 2 A319 -- 2 A319/1 A320
SNN - 1 A319 (swapped with LGW), 2 B757
LGW - 1 A320 (swapped with SNN)
ORK - 3 A320 -- 4 A320
DUB - 1 A319, 23 A320, 3 A321, 7 A330, 1 B757
Then the 4 A320 in UK.
Operationally
AFAIK at least 1 A320 is more less standby to cover problems around the network and of course all there fleet isn't active at DUB in winter, of the SH around 20/21 are with others in use over peak periods of the winter. And two A320 or 321 depends overnight in LHR most of the week.