HC Deb 01 July 1982 vol 26 c375W
Mr. Morgan

asked the Secretary of State for Wales if he will list the statutory provisions which contain definitions of the boundary between England and Wales.

Mr. Wyn Roberts

The boundary between England and Wales is defined by the boundaries between English and Welsh counties. These are in turn defined by the boundaries of the parishes and communities which march on the border. Except in the Dee estuary, the relevant parish boundaries have been ascertained by the Ordnance Survey, mainly in the nineteenth century, under powers contained in the Ordnance Survey Act 1841 and subsequent continuing legislation. The defined boundaries are shown on Ordnance Survey maps.