Hodnet angling club have some trout and grayling fishing on the Tern.
http://www.unlimited-scope.com/hac/index.html
Also, the Dee at Bangor on Dee en route to Wrexham:
http://www.bodsaa.org.uk/WebStructure/Frames%20page.htm
More choice in South Shropshire, getting into Wye and Usk passport territory too, Gamefishers beats, another club I can't recall with beats on the Arrow (White something??), and some BAA stretches (on Lugg?).
Can't vouch for any of these I'm afraid as haven't had time to try them, just tucked away in the memory banks for future reference!