Complex sentence: Kent continued to work in Carlisle after leaving the police force, and when aged 88 was recorded as an attendant at the London and North Western Railway Companies waiting room (third class) at Citadel station.
Split into simpler sentences: Kent continued to work in Carlisle after leaving the police force. At the age of 88 he was recorded as being employed an attendant in the service of the London and North Western Railway Companies, specifically working in the waiting rooms at Citadel station.