The Grand Fishing Adventure 8 episodes Ali and Bobby head to Nottinghamshire to fish the River Trent for big barbel - they then head to a secret lake and try to catch some of its huge but wily carp.
Fishing groups, Pixham Farm, Clevelode and Beauchamp Court Syndicate, and the Worcester Angling Society have collaborated with the Environmental Agency in order to restock the river with Barbel fish.