The Railway Clearing House (RCH) was an organisation set up to manage the allocation of revenue collected by railway companies for the conveyance of passengers and goods over the lines (or using the rolling stock) of other companies. It went on to become the major regulatory body overseeing the day-to-day running of railways in Britain and Ireland and setting common standards for railway companies, which ensured their safety and interoperability.

The map is presented in A4 format, printed on 200gsm silk-finish card in an Irish-made artboard mount ready for framing.