It was caught by the Essex angler from RH Fisheries-run The Avenue Fishery in Shropshire.
Mr Doherty, of Basildon, caught the fish on Monday.
He said: “I don’t understand the mentality. All I did was cast a bait in a lake. Contentious issues come out in carp fishing.”
He added: “Part of me regrets catching it.”
RH Fisheries announced the news on its Facebook page, a statement read: “And here she is ‘Big Rig’, which weighed in at a NEW British carp record of 70lb 4oz! A massive well done to the capture Tom Doherty! Catching her on PB Products end tackle and Mainline 18mm bottom bait!
“History has been made and watch this space for her to go even bigger! And not forgetting the other chunks putting the weight on!”