I was told a while ago, that BA would get roughly 8% of any new slots created at LHR (50% should go to existing airlines, of which half go to UK airlines, and these are split pretty much evenly between BA, BD and VS) - this compared to the 40-odd % they currently hold.
Akerosid, what percentage of slots at FRA are held by Lufthansa, and at CDG/AMS held by Air France / KLM? I'm sure it's more than 40%. So BA's holding at LHR is not excessive.