London Road bridge can be seen in the background. RCTS stands for 'The Railway Correspondence and Travel Society'. Founded in 1928, it is one of the largest British societies for railway enthusiasts, primarily catering for those interested in the fine detail of day-to-day operations. It publishes the monthly Railway Observer and very detailed and well-regarded locomotive histories. Affectionately known as 'The Royal Corps of Train Spotters'). The engine in the background, coupled to the parcels van, is an Ivatt class '2MT' (i.e. a not very powerful mixed-traffic engine designed by Mr. Ivatt for the L.M.S. The number '2' is on a scale of 0 to 9 inclusive, with zero being the least powerful).