Towergate Underwriting chief executive Clive Nathan predicted that the market could harden in SME if the riots continued.

He said the insurer was dealing with a £200,000 claim from Tottenham.

“I think it’s a bit isolated but it was to continue it would have every possibility of pushing up rates," he said.

Ataraxia chief executive Stuart Randall said the scale of the rioting was not likely to push rates up yet, but that premiums could rise if it continued.