Isle of Anglesey County Council Llaneilian (Llaneilian/Rhosybol), Llanfaethlu (Llanfachraeth/Llanfaethlu/Llanrhuddlad ward* of Cylch-y-Garn), Llanfair-yn-Neubwll (Bodedern/Llanfair-yn-Neubwll), Llanfihangel Ysgeifiog (Llanfihangel Ysgeifiog/Penmynydd), Llangoed (Llangoed and Penmon), Llanidan (Llanddaniel Fab/Llanidan), Llannerch-y-medd (Llannerch-y-medd/Tref Alaw), London Road (London Road ward* of Holyhead town), Maeshyfryd (Maeshyfryd ward* of Holyhead town), Mechell (Mechell/Llanfairynghornwy ward* of Cylch-y-Garn), Morawelon (Morawelon ward* of Holyhead), Moelfre (Moelfre), Parc a'r Mynydd (Parc a'r Mynydd ward* of Holyhead town), Pentraeth (Llanddona/Pentraeth), Porthyfelin (Porthyfelin ward* of Holyhead town), Rhosneigr (Rhosneigr ward* of Llanfaelog), Rhosyr (Rhosyr), Trearddur (Rhoscolyn/Trearddur), Tudur (Tudur ward* of Llangefni Town), Tysilio (Tysilio ward* of Menai Bridge) and Valley (Valley). <nowiki>*</nowiki> A review of electoral arrangements on Anglesey by
Holyhead Mail Pier Light Holyhead Mail Pier Light Holyhead Mail Pier Light on Salt Island, Anglesey, is an inactive lighthouse which was built by the civil engineer John Rennie in 1821. It is probably the second oldest lighthouse in Wales, after Point of Ayr Lighthouse and is the last of three lighthouses located on the island. There is a matching tower in Howth, Ireland, also designed by Rennie, for the other terminal of the Irish packet steamer. The lighthouse is of national significance as one of John Rennie's surviving works. He was one of the most eminent engineers of the world's first Industrial Revolution.