There's some big cats in the Thames if you know where to target, the lads that fish for them are very secretive about it, I know of 50/60lb plus fish coming out of there.
I can see more and more rivers holding them over the coming decade. It might not happen yet, but within two decades we'll have 'ebro' style catfishing I reckon....I really do. back in the 80's kevin Maddocks predicted the catfish would be the fish of the 90's, taking over from the carp. Obviously that didn't happen in that timescale, but it's happening more and more now. It has always been said that the catfish cannot spaw