Cleveland angling is the shop, really helpful
im from the Stockton area, so depends what you want to catch.
The river at Yarm is good, behind Sainsburys is often good bream fishing on an evening. If you walk under the bridge its good Pike and perch fishing. If you stay on that bank its free fishing for miles.
Also if you go into the green at thornaby, the houses back onto the river. Horse shoe bend is good for chubb.
Ive also been told that Middlesbrough angling club have given up the stretch in leven. If so thats great trout, grayling and chubb fishing..
Hope that helps a little?