Details of extant records on Archives Network Wales for the following;

• Fishguard and Goodwick Post Office records and Union of Post Office Workers papers "Papers relating to the Post Office and the Union of Post Office Workers in Fishguard and Goodwick, Pembrokeshire, 1949-1959, including correspondence, 1954-1956; miscellaneous Union papers, 1956-1959; papers relating to personnel in Fishguard, 1950-1959; payslips and receipts, 1956-1959; newspaper cuttings, [1956]; and GPO, Union and Treasury booklets, 1949-1958"

Details of extant records on Archives Network Wales for the following;

• Record Office Business Survey Documents   "In 1977-1978, Carmarthenshire Record Office carried out a survey of businesses in Carmarthenshire, Cardiganshire and Pembrokeshire, producing synopses of their history and survey lists of their records."  
• Business Records, Pembrokeshire  1736-1989      "Pembrokeshire Record Office has collected the records of numerous businesses in Pembrokeshire...................."

• TNA provide:
  • A very useful  Research Guide: Companies and business
  • Their National Register of Archives (NRA) ("Discovery") is particularly useful for finding the location of the archived records of named organisations
• The Association of Business Historians creates and disseminates knowledge about business history.
• TNA hold some railway company records. (Ancestry provides subscription access to the TNA's railway employment records 1833-1958, from a number of historic railway companies.)
• Some employers' and trade association archives are held by Warwick University's Modern Record Centre.
• Trade directories can provide some information (including advertisements) about businesses, large and small, through the years.
• Railway Work, Life and Death - records of railway worker accidents in Britain between 1911 and 1915 - "a joint initiative between the University of Portsmouth and the National Railway Museum (NRM)".
• The John Lewis Memory Store: ". . . a living history of John Lewis & Partners. Through the site, people share their memories, photos, maps and information about John Lewis & Partners, past and present."
• United Kingdom Cemetery Records, from Interment.net.