46233 Duchess of Sutherland is a London Midland and Scottish Railway (LMS) Princess Coronation Class.
Built in 1938 in Crewe Works as a high speed express passenger locomotive, 46233 hauled passenger services such as 'The Royal Scot' and 'The Mid-Day Scot' between London Euston and Glasgow Central as well as other expresses to Liverpool.
On 11 June 2002, the restored Duchess was the first steam locomotive to haul the Royal Train for 35 years, transporting Queen Elizabeth II on a tour to North Wales, from Holyhead to Llandudno Junction, as part of her Golden Jubilee. The trip also marked the 160th anniversary of the first Royal train in 1842.
Whilst this locomotive is rostered for the steam hauled sections of the trip listed, it cannot be guaranteed and may be substituted for a different engine.