If the runway is given the go ahead there would be a CPO. Why would BAA buy any land before that at a possibly inflated price.
Also maybe the land wasnt up for sale and was owned by someone in Sipson who is against heathrow expansion. They wouldn't sell to BAA but did to Greenpeace for their little publicity stunt.
Of course non of these celebrity supporters would be bothered about the amount of jobs created in the local area as a result of the expansion, as long as their west London homes dont lose much in value.
