I have just started carping again after a few years break due to work comitments and not having enough time. I have fished a couple places in cornwall. Bake lakes has 7 lakes i have found that if you want a good days fishing with alot of fish averaging around 7-8lb then it isnt bad, there are also a good number of doubles here also.
Bush lakes is a farm with 3 ponds near saltash. They have fish up to 30lbs here, i found it not very welcoming tho n you would have to phone before you travel there to fish. Hope these are a help.