'Guarded' against gas. Anti Air Raid training at Euston. And IMS Air Raid Precaution Mobile Instructional Unit was on view at Euston station, London. The unit consist of two vehicles, one a lecture coach and the other a decontamination coach. It has been provided by the IMS Railway as part of a scheme for the training of their staff in Air Raid Precautions. The mobile unit is soon to undertake a tour of the IMS system in England, Scotland and Wales. They railway intends to train nearly 23,000 of their 230,000 workers in anti air raid work. Photo shows, railwaymen being fitted with gas masks. Aboard the anti air raid train at Euston station. 24 November 1937