Philippa,Yes they are available,and a good investment,I don't at this time know if fire detectors were fitted in the flats where the serious fire was in Acton,they were extremely luckyas due to cuts in London there is are only one fire appliance at,ACTON,CHISWICK and PARK ROYAL,fire Stations,all were available for this incident,the circumstances may have been very different.regards John.
Dr John Stolworthy D.Sc ● 3121d