A Russian-born banker handed another £52,000 to the Tories over the summer, new figures have revealed.
Lubov Chernukhin, the UK's biggest female political donor ever, is married to a former Putin ally.
She has frequently bid in fundraising auctions at Tory fundraising events, bagging privileged access to successive Prime Ministers including a cosy night out with Theresa May and Liz Truss, and tennis matches with Boris Johnson and David Cameron.