Original sentence: Most of these locomotives have now been withdrawn from active duty, though some of preserved members are in railtour services with both the heritage spot hire rail companies called the West Coast Railway Company and Cotswold Rail, whilst other preserved Class 33s remain operational on preserved heritage railways
Edited sentence: Most of these locomotives have now been withdrawn from active duty, though some of preserved members are in railtour services with heritage spot hire rail companies West Coast Railway Company and Cotswold Rail, whilst others remain operational on preserved heritage railways