This plaque was unveiled by John Dalrymple, 14th Earl of Stair, and Alex Ferguson, MSP for the Galloway and West Dumfries to commemorate the 150th anniversary of the railway arriving at Stranraer Harbour 1st October 1862 - 1st October 2012 Portpatrick Railway Company 1861-1864 Caledonian Railway Company 1864-1885 Portpatrick and Wigtownshire Joint Committee 1885-1923 London Midland and Scottish Railway Company 1923–1947 British Transport Commission 1948 –1962 British Railways Board 1963–1997 National Express 1997– 2004 First ScotRail 2004 – Stranraer Harbour Station