Possibly this was a slur against her made at the time but I was told this as a young student at uni in 79-82 window.havw a read of https://www.epoch-magazine.com/post/the-rise-and-fall-of-sov... for context.

During the initial rapprochement years British banking was nothing like as present in the Russian denationalisation and the emergence of the oligarch kleptocracy. The decision of the Russian elites to invest in London came much much later.