The motto of the borough, in Cornish, is "Ro an mor hag an tyr", meaning "From the sea and from the land." It recognises the Borough's connection with the sea (fishing and tourism) and the land (china clay and agriculture). St Austell, the largest settlement in Cornwall, does not have a Parish/Town Council.
Restormel is twinned by oath, which can be viewed in the council offices in St Austell, with Kreis Dithmarschen. This used to be part of the borough council, however in recent years it has become a separate organisation.