Found whilst collecting passengers at the side of Wrexham Bus Station on a private trip on 8th October 2011 (green poster claims Peter Key at the Manchester MEM starting from Oswestry, calling at Wrexham and Chester). This example is R504 XAW, Volvo B10M, Berkhoff Axial 50, new in 1997 to this operator (when they were based in Oswestry) but of course these days are just over the Powys border at Four Crosses.
Kind Regards
© Chris Clegg