Insurance companies say smaller displays are not worth the risk - forcing the cancellation of at least one firework party.

One of the first displays to go is at Westfield in Norfolk.

Villager Helen Howes said the event, which attracted 70 people last year, was being cancelled.

"Unfortunately this year we won't be having a Guy Fawkes celebration. We have been unable to get insurance cover."

In neighbouring Suffolk, Gareth Mutimer, of Thunder Burst Fireworks, who organises up to a dozen charity displays, says premiums have risen by 2000% despite an excellent safety record.

"I've been ringing round for cover. One insurance company has given me a quote of about £500. Last year is was around £25 per display. The others just write you off - they do not want to know," he said.

Ipswich insurance broker Tim Ryan said the size of the claims was becoming much higher.