easyflyer83 - bmibaby have Belfast city, Cardiff and East Midlands where ZB don't have bases.
Then with MAN & BHX you can take baby off the routes ZB do and offer more destinations with the extra capacity.
Engineering can do the maintance on 737's as alot of engineers are 737 trained.
Another idea i have is if ZB buy Air Europa. Lots of rumours about 737/767 which they have and don't forget the link up they agreed to although yet to see any news on that one. ZB want to increase their pax inbound to the UK so this would be a way to do that. Plus Air Europa have 330's and the smaller ERJ's which could do nicely in some of the smaller UK markets.