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Postcodes in Caergybi / Holyhead, Sir Ynys Mon - Isle of Anglesey
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LL65 1LD Llaingoch
LL65 1LU South Stack Road
LL65 2BT Victoria Road
LL65 1BP Boston Street
LL65 1RL William Street
LL65 2UJ
LL65 2ZZ Penrhos Industrial Estate
LL65 4ZT