The Wireless Station at Holyhead was one of the Marconi Wireless Telegraph Company’s early Coast Wireless Stations, placed around the coast of UK and Ireland to develop commercial traffic for the company. The station was opened in 1901, in a private house on high ground near the centre of the town and had a 150 ft three section wooden mast set on nearby land. Holyhead
(callsign HD) was the first of three Coast Stations in the Irish Sea. By 1903 the service had been transferred to a site at Seaforth, just north of Liverpool, this station became known as Seaforth Radio (callsign LV becoming GLV in 1909). 

Seaforth Radio closed in 1960, when the service returned to the island and became known as Anglesey Radio, operating from a site near Amlwch until closure in 1986.

The photos show old Marconi equipment at Holyhead (left) and the station (right).

The International Marconi Day Station will operate fromthe 1901 site of an old Marconi Coastal Wireless Station which received on the 21st May 1901 a radio message from the 1st British Merchant Ship fitted with wireless apparatus.  She was the Lake Champlain of the Beaver Line sailing out of Liverpool.