I can see things not going too well for them at LCY... I mean in all honesty... Look at their routes and what would happen if they went:
AMS - Could easily be taken over by BA+BE frequency increases, BE could offer the KLM codeshares
ANR - VLM will probably be taking this over next year anyway
DRS - Its only UK route, is it important? Are loads good? If so BE could have a go, if not it would probably be lost.
DUB - BE and BA would have this in no time, even EIR might rock up in the city?
FLR - BACF already competes
NTE - Could EZY absorb these pax? Or BE might start up
ORY - An interesting one, Cityjet is the only operator on this route, IIRC this has always been a Cityjet route too, could VLM take it? Could BACF start CDG, BE take over and offer AF codeshares or could LCY see operation by HOP!?
RTM - BACF would have it covered
AVN/BES/BVE/DOL/TLN - Probably lost... Or could be moved to SEN
A few others could work from SEN, simply due to lower operating fees