Then check out this list of waters

Apperley Pools Apperley Gloucestershire Tel: 01214 519111
Beanhill Farm Lydney Gloucestershire Tel: 01594 529846
Bitterwell Lake Westerleigh Gloucestershire Tel: 014547 78960
Bradleys Pits Cirencester Gloucestershire Tel: 01452 883202
Bulley Lane Fishery Churcham Gloucestershire Tel: 01452 750320
Chad Lakes Bledington Gloucestershire Tel: 01451 831470
Gardners Pools Saul Gloucestershire Tel: 01452 532799
Hailes Fruit Farm Winchcombe Gloucestershire Tel: 01242 602123
Hillview Lakes Puckrup Gloucestershire Tel: 01684 296719
Lemington Lakes Moreton Gloucestershire Tel: 01608 650872
Lydney Lake Lydney Gloucestershire Tel: 01291 621402
Manor Brook Lake Cirencester Gloucestershire Tel: 01452 306050
Morton AC Pits Bourton Gloucestershire Tel: 01451 822207
Pump Hill Pond Mitcheldean Gloucestershire Tel: 01594 824413
Rissington Lake Bourton Gloucestershire Tel: 01451 810472
Santhill Fishery Bourton on Water Gloucestershire Tel: 01451 810291
Stone End Farm Lakes Hartpury Gloucestershire Tel: 01452 700254
Three Counties Fisheries Ryton Gloucestershire Tel: 01531 890455
Whelford Pools Fairford Gloucestershire Tel: 01285 713649
Watermark Fisheries Cirencester Gloucestershire Tel: 01285 862680
Witcombe Waters Witcombe Gloucestershire Tel: 01452 864413
Witcombe Farm Witcombe Gloucestershire Tel: 01452 863591
Thanks to http://www.fish-uk.com/ for this list of venues