Plenty of room for Thomsonfly and Flybe to co-exist on the South Coast, I reckon, as long as there's not too much route duplication
(although I suspect there could be demand for both to continue to operate some - AGP, ALC for example)
Other LCC dests that BEE don't do from SOU - FAO, BCN, NCE - bet some of them will be on the TOM list.