ZB is now in T2, LS have always practically parked much of it's fleet over Winter and Easyjet have incredibly quiet days during mid week at this time of the year.
I know EasyJet now use T1 and mainly Pier B (along with gates 23 & 25 in the morning) but do Jet2 still mainly use B because with both EZY & LS in Pier B, with the odd TCX flight Pier B to me would practically be crampt and full up where the more spacious Pier C would be pretty much empty.