It was held by a Essex angler from RH Fisheries-run The Avenue Fishery in Shropshire.
Mr Doherty, of Basildon, held a fish on Monday.
He said: “I don’t know a mentality. All we did was expel a attract in a lake. Contentious issues come out in canopy fishing.”
He added: “Part of me regrets throwing it.”
RH Fisheries announced a news on a Facebook page, a statement read: “And here she is ‘Big Rig’, that weighed in during a NEW British canopy record of 70lb 4oz! A large good finished to a constraint Tom Doherty! Catching her on PB Products finish tackle and Mainline 18mm bottom bait!
“History has been done and watch this space for her to go even bigger! And not forgetful a other chunks putting a weight on!”