Beeston, i've done a bit of research and what i thought was a total ban wasn't quite accurate. From what i can gather the National Wildlife Trust are slowly restricting the fishing at Attenborough with over 40% of it now being out of bounds ( still a shed load of water to fish though ). Apparently, David Kent of NAA fears a total ban on the water eventually, so fill your boots while you can.
I'll have a word with my brother for you if you want ?? He is involved with the Nottingham tourist board and should have info' regarding the current situation at Attenborough, or phon NAA as i'm sure they will give you all the info' you need