I dunno about BY – I can see them going airbus sometime in the near furure – only 2 B738s were operated in the UK G-BYNB/C i think it was – one was operated from EGNM, But they to be honest were a failure and after 18months were transferred to Sweden in return for a couple of 752s. Tui as a group maybee as Neos and Hapag use tham as well as Britannia AB. Not cert on this one tho folks!