MAN is by some margin the biggest base. Then BHX probably has the edge over STN, which is probably slightly bigger than LBA by seat capacity since it has the A321's planned in again. LBA I think is still a mix of 738 and 733s, though correct me if I'm wrong.
Thereafter NCL is a good bit ahead now of the smaller bases having picked up the ex EZY/TCX demand. Before then EMA was slightly ahead, though with the growth of the BHX base has reduced down to just 6 aircraft, which puts it about level with GLA. Capacity permitting, I'm sure BRS will still have a lot to deliver and will eventually become more prominant in the network.