The parish of Lostwithiel was originally in the Bodmin Registration District; there were sub-districts at Bodmin, Egloshayle, Lanlivery and St Mabyn but these have now been abolished. It is now in the Registration District of St Austell. Parishes within the district were: Blisland, Bodmin, Bodmin Borough, Cardinham, Egloshayle, Endellion, Helland, Lanhydrock, Lanviet, Lanlivery, Lostwithiel, Luxulion, St. Kew, St. Mabyn, St. Minver Highlands, St. Minver Lowlands, St. Tudy, St. Winnow, Temple, Wadebridge, Warleggon, Withiel.
The Superintendant Registrar of St Austell can be contacted at: 12 Carlyon Road, St Austell, PL25 4LD. Tel: 01726 68974. Fax: 01726 68974.