Know Waltham Forest well. Cannot believe they would sell land where the track and pool are especially in London and 2012. Would have thought that the track would be used as a training venue for the games.
If the council are going to demolish the pool and track. Then I guess they must have somewhere where residents have access to a pool and track. If your club are going to have a petition. Put a link to this site. I would also get all the local clubs in London, Essex, Kent and Herts for support too. Get local councillors who are against the idea. The local MP. The swimming club. Oh and get the media involved. The more stink made, the more the council will have a fight. Good luck.