Mr Banks, the founder of Leave.EU who was barred from joining the Conservative Party in 2018 gave Ms Jenkyns’ campaign £2,000 to help in her re-election bid, The Guardian revealed.
But Morley and Outwood MP Ms Jenkyns said this was a “personal donation” and “all donations to my campaign have been properly and transparently declared in the usual way”.
Mr Banks told the Guardian the donation signalled a thawing in tensions between himself and the party.
He said: “We are much friendlier with the Conservative party. We supported them during the campaign and so we have a fairly cordial relationship. Boris is doing a great job.”
He added: “Andrea has been a big supporter of Leave.EU and I suppose I thought it would be good to offer my personal support.”