Thirty eight, Mk. 3b First Opens were built under lot number 30982 in 1985 at Derby Litchurch Lane Works for use on the West Coast main line. The Mk. 3b coaches featured revised style lighting units and luggage racks compared to the earlier built Mk.3a coaches as well as built in tail lamps at the vehicle ends and revised IC80 style seats. Twenty two of the build were branded as ‘InterCity Pullman’, nineteen of which were named including 11074 which was christened ‘Thomas Brassey’ using white lettering, mid vehicle, on the red stripe. Turned out from new in InterCity Executive livery (the precursor of Swallow livery) the Pullman coaches were for use in the Manchester, Liverpool and Lancashire Pullmans whilst the remainder of the build were for normal West Coast main line services displacing some of the Mk. 3a FOs which were converted to addition RFM vehicles to allow the remaining Mk. 1 catering vehicles to be taken out of service and the entire West Coast catering operation to move over to modular operation.
Following cessation of InterCity Pullman services, all of the West Coast Mk. 3s operated as a common pool until the arrival of the Pendolinos which saw 11074 placed in store. Transfer to Norwich Crown Point followed where 11074 became a training vehicle before being earmarked for use on East Coast main line services and moved to Ilford Works to await refurbishment. The transfer of Mk. 3 coaches to East Coast was subsequently shelved and 11074 eventually returned to store at Long Marston. Purchased from Porterbrook Leasing on January 1st 2015.
11074 was moved from Long Marston to Ruddington on the Great Central Railway (Nottingham) on 28th March 2015 and following repairs, safety checks and a heavy clean re-entered service on 11th July 2015.
In April 2015 the interior went through a thorough deep clean to ensure the vehicle came up to an aesthetically pleasing standard. Work also took place to ensure the electrics, batteries and air system were in a satisfactory condition for operation.
In December 2015 this vehicle along with the groups other two MK3 carriages headed north from Ruddington to Kilmarnock works in Scotland for a repaint into the early 1970s Intercity livery to match HST Power Car 41001.