Anglesey Sqn Search and Rescue Helicopters, both units providing employment for about 500 civilians. RAF Valley is now the headquarters of 22 Sqn Search and Rescue. There is a wide range of smaller industries, mostly located in industrial and business parks, especially at Llangefni and Gaerwen. These include an abattoir and fine chemical manufacturing, as well as factories for timber production, aluminium smelting, fish farming and food processing. The island is also on one of the major routes from Britain to Ireland, via ferries from Holyhead, off the west of Anglesey on Holy Island, serving Dún Laoghaire and Dublin Port. Much
Admiralty Arch, Holyhead the eastern side of Anglesey. Due to its history it is known alternatively as the George IV Arch by the Royal Commission on the Ancient and Historical Monuments of Wales or the Triumphal Arch. The Grade II listed arch is situated within the Port of Holyhead on Ynys Halen and cannot be accessed by the public due to safety reasons. In 2017, plans to move it to a more open location were mooted. At present the best place from which to view it is from St Cybi's Churchyard. Admiralty Arch, Holyhead Admiralty Arch, located in Holyhead, Anglesey, was built in