Gerard Batten claims it it the latest of a series of attempts to intimidate UKIP activists and campaigners across the UK.
Gerard Batten added:
"We have seen UKIP premises vandalised, billboards destroyed and elected representatives, campaigners and activists targeted with physical and verbal abuse. Many if not all of these attacks appear to have been driven by the hard left and their allies operating under the guise of 'anti-racism'."
More top news
An ITV News journalist worked as a Deliveroo rider to see what it's like - from induction to cycling through traffic and making deliveries.
Sutton United substitute goalkeeper Wayne Shaw has offered his resignation after eating a pie during a match.
Brixton's tribute to David Bowie will be a gravity-defying structure standing three storeys tall.