If you donated money to Leave Means Leave, a cross party campaign chaired by Richard Tice to push for post-Brexit policies, you may (or may not) be surprised to learn that £1mn went to the Brexit Party (as Reform was then called) to shore up its finances in 2020.
Moreover this was likely drawn from a surge of donations raised for a 'Brexit celebration' event in the weeks before the donation to the Brexit/Reform party.