M5 (Culm Valley) Mr. Maxwell-Hyslop asked the Secretary of State for the Environment how his decision to drive the M5 motorway through the Culm Valley railway line was affected by the admission by the Department of Employment that it had supplied him with wrong figures on the unemployment to be caused by the closure of the Unigate factory at Hemyock. Dr. Gilbert I can add nothing to the letter that the Under-Secretary of State for Transport sent to the hon. Member on 16th October.