LONDON (Reuters) - Arron Banks, a tycoon who backed leaving the European Union, on Wednesday dismissed allegations that Russia had funded Brexit. Britain s electoral commission earlier said it had opened an investigation into whether Banks breached campaign finance rules in the 2016 Brexit referendum.  Allegations of Brexit being funded by the Russians... are complete bollocks (rubbish) from beginning to end,  Banks said in an emailed statement. Commenting on the electoral commission investigation, Banks said:  This is the Remain establishment once again trying to discredit the result and it s all starting to get rather boring!  Banks ended the statement with the word  Nostrovia , a mispronunciation of the Russian phrase  na zdorovie  which is sometimes used as a toast to good health when drinking. 