Police are understood to be probing £500,000 of donations to Reform UK by Fiona Cottrell, mum of Nigel Farage ally and convicted fraudster George Cottrell, to determine if she was the original source of the funds

Exclusive: Bankers have raised potential money-laundering concerns over loans and donations involving senior party figures

George Cottrell’s mother, Fiona, at centre of criminal inquiry over potential evasion of restrictions on donations