What an excellent idea:
Buy a profitable company at LGW, that is already a franchise, for £75 million. Merge it into mainline 12 months later (despite having pledged to the MMC to keep it seperate) thus destroying its cost base that made it profitable in the first place, and then pull out of LGW altogether because the management finds itself unable to make a profit at LGW.
The only words for it are "INCOMPETENT MANAGEMENT"