HELIOSLOUGH'S alternative sites study did not examine locations allocated under planning policy for homes, factories or offices, its planning expert has admitted.

Richard Tilley said: “The implications of a strategic rail freight interchange would make it impractical.

“If we had gone down that route, could we have achieved a site?”

Mr Reed seized on his admission that housing sites had been omitted because the cost of the land would have been prohibitive, but Mr Tilley said: “You would have to provide some other site for the housing, and it would have to be in the Green Belt.”

Challenged why he had not considered designated employment land, he said: “It is completely impractical.

“These employment sites are all occupied by hundreds of companies. The north-west sector of the M25 is not like east London.”