HC Deb 25 April 1968 vol 763 c65W
7. Mr. Costain

asked the Postmaster-General, how many telephone exchanges are at present operating subscriber trunk dialling facilities; and how many more he estimates will be operating before the end of this year.

Mr. Joseph Slater

1,790. Over 650 more exchanges should have S.T.D. by the end of 1968.