Notes: The London & Brighton Railway agreed to build a station at Battlebridge Farm, between Merstham and Redhill as part of an agreement with the landowner, Lord Monson, to sell land to the company for their Brighton line. The station would be called Merstham even though it was a mile south of Merstham village.

The Brighton line opened on 12 July 1841 but Merstham station didn’t open with the line but after further negotiations with the landowner the station opened on 1 December that year.

The original station was located 3/4 mile south of the current Merstham station. From 1842 it was also used by the South Eastern Railway and was the point at which travellers between the two railways exchanged trains. The section of line between Coulsdon and Redhill was transferred to SER operation on 19 July 1842 and the new owners decided to close Merstham station on 1 October 1843, thereby forcing passengers wishing to change trains to walk between the two stations at Redhill. This was a tactic to force the L&BR to share the new SER Reigate station at Redhill. Once the L&BR had given way and closed their existing station at Reigate Road, Redhill, the SER opened a new station at Merstham on the present site on 4 October 1844.

A public goods siding  later opened at the site of the first Merstham station this is shown on early OS maps as Thornton Siding but the Railway Clearing House Handbook of Stations for 1904 lists it as Thornton's Siding. The siding was still open in 1957 but the 1963 OS map, reproduced below, shows it as disused. Note the map now names it as Thornton's Siding.

The Merstham station building survived until at least 1935. It's not known if it was put to any other use after closure.

For a full and detailed history of Merstham station see an excellent article by Peter Manning on the Redhill & Reigate History Society web site