The Air Raid Precaution Act of 1937 presented a statutory duty on local authorities to provide shelter and anti-gas precautions for their community. The policy allowed for protection by personal gas masks and domestic air raid shelters, most commonly Anderson shelters. In addition, local government were also responsible for siren warnings, first aid and rescue services, firefighting, gas decontamination and enforcement of blackout regulations by ARP wardens and civil police.
Here are two figures from the Taylor & Barrett Decontamination Unit set both wearing black decontamination protective suits with white gas masks and gloves. One has a broom in their hands and the other has a detector probe.
both figures are in good plus original condition with some paint loss. detector probe is a later replacement