Those parts of Lancashire, Merseyside, Cheshire, Shropshire, Clwyd, Gwynedd, Ceredigion and Powys bounded by:
On the North by the River Ribble to Preston. On the East the A6 to A49 adjacent to junction 29(M6), A49 to Wigan, A49 via Warrington to Whitchurch (Cheshire Way Island), the B5476 through Whitchurch to join the A41 to Ternhill. The A53, A442 via Telford to Bridgnorth and B4364, A4117 to Ludlow. On the South A49, A4113, A488, A44, A470, A44 via Knighton, Cross Gates, Rhayader and Llangurig to Aberystwyth. Including the entire Isle of Man.