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
Salt Island, Anglesey island was the Stanley Sailor's Hospital. This hospital was set up in 1871 by a local philanthropist and initially only treated sailors although it quickly became a general hospital. It was taken over by the National Health Service in 1948 and closed its doors in 1987. There have been three lighthouses located on the island. The current lighthouse is the Holyhead Mail Pier Light. It was designed by John Rennie the Elder in 1821, although he died before supervising the construction. It is one of the few surviving examples of Rennie's work. The lighthouse was superseded by the Holyhead Breakwater