Finally got insurance details, went to a&e, told the cops.

Nothing broken, and rediscovered my belief that the police are pretty useless.

Really reticent to take any details. The place was empty, so they didn't seem too busy. Only after airing my concerns that I wouldn't have an official record of the accident in case of dispute that they finally took some details on a scrap of paper.

Insurance company have admitted liability on the blower so now it's just a case of submitting an estimate from the LBS for the repair work, and getting some solicitors to claim for bumps and scrapes. Result!

Ta to all who commented - some great advice given!