Townsend Thoresen
Dates
| / /1973 | Townsend Thoresen Townsend Thoresen commence running from Cairnryan to Larne Harbour. |
| / /1987 | Townsend Thoresen
P&O European Ferries Townsend Thoresen, operator of the Cairnryan to Larne Harbour service amongst others, becomes P&O European Ferries. |
