Update - Since the publication of this article, we have been advised that the National Crime Agency has confirmed by letter to Liam Byrne MP that Mr Sheleg's donation was permitted under the Political Parties, Elections and Referendums Act 2000.
One of Boris Johnson's biggest donors was flagged to authorities over suspicions the ultimate source of a six-figure donation was a Russian bank account, it has been reported.
Millionaire art dealer Ehud Sheleg has bankrolled the Conservative Party to the tune of more than £3.5 million since 2017 - and his cash helped Mr Johnson secure his landslide victory in the 2019 election.
