Plenty of Pike and a few (big) Perch in the Tyne.
Pike-Years ago when the Tyne had a good run of Salmon, we used to fish the South Tyne, and the tributaries were packed with big Pike feeding off the Kelts, I (honestly) nailed a 17ib in a tiny stream just south of Alston. We used to walk the streams looking for pools where the Salmon would spawn and the Pike, Eels and Otters would wait. But for the Big Buggers prob best bet is the big pools south of Hexham using a deadbait, Tyne Salmon ain't going chase a lure. Though a did see a few 20lbs caught lower down Prudhoe way on flies in the 80's (all killed unfortunetly).
Perch-There are some BIG Perch in the Tyne, I caught a 2lb one at Tyne Green, Hexham, live Minnow all the way.