Holyhead Telegraph Station was part of the Liverpool and Holyhead Telegraph (nprn 300822). It was built for a previous local telegraph in 1810, taken over by the L&H Telegraph in 1827 and rebuilt in 1841. The building is now a ruinous walled complex.

Source: Faster than the Wind: The Liverpool to Holyhead Telegraph; Frank Large; Avid Publications; 1998.
B.A.Malaws, RCAHMW, 14 September 2000.