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'."
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A parent who drove at a teacher because he wouldn't allow access to the school car park, carrying him on his bonnet, has been jailed.
Police shut down roads and evacuated homes near the suburban embassy as they attended to the report of a "suspicious item".
He told her "If you don't be quiet I will kill you" before stealing a bangle and rings from her hand.