503 The demolishion of a Merseyrail Class 503 unit is well under way at the Alexandra Dock Postal sidings,Bootle sometime in 1988. the destination of the infrequent Class 3 working from Liverpool Lime Street., , Scrapping was contracted out to the Leicester based company of Vic Berry, who also specialized in asbestos removal as well as scrapping withdrawn locomotives and rolling stock. , , Presumably, these 503 had already had their asbestos content removed during a previous overhaul at their usual works visit location of Horwich.