Ffestiniog Railway or Ffestiniog Railway Company is a trading name used by the Festiniog Railway Company. There is no corporate entity bearing this title. Another trading name, for both the company's railways, is Ffestiniog and Welsh Highland Railways.
History of the spelling
It is also common (and correct Welsh) that people use the Ffestiniog instead of Festiniog way of spelling. By its Parliamentary Act of 1832, the Railway Company was incoporated using the anglicised, single F, spelling and ever since its legal entity has been the Festiniog Railway Company.
As a business that operated within a frequently Welsh-speaking community it is hardly surprising that the proper Welsh spelling, the double Ff, sometimes slipped into written records during the old company's days.
During the 1970s - 1980s, in a response to a different cultural climate, the Company investigated the process for altering the legal entity and adopt the double Ff. The excessive cost of a complex process (including a new Act of Parliament) precluded any such action.
During the 1990s, however, a conscious effort was made to promote the use of the double Ff and this form is now used on virtually all paperwork, save for essential legal documents.
The exception to this is the FR Heritage Group, by virtue of its interest in the historical aspects of the railway.