Built in 1991 as part of the railway's "Increased Capacity" (INCA) programme, "The Carnforths" were 3 carriages built by Carnforth Railway Restoration & Engineering Services (hence the nickname), with running gear, electrical services, finishing and painting by FR Co. at Boston Lodge. Construction is of Aluminium bodies on steel under frames, with particular care taken to insulate the body from the underframe - thereby reducing the corrosion problems encountered with the Tin Cars. They amongst the first FR carriages to be fitted with heating, and formed the backbone of the new C Set, which is still the main set used during the winter. They also featured twin vacuum braking and Push Pull apparatus from new.
It was confirmed that the Carnforths would see a few more years of service in October 2015.
These carriages consist of:
- Carriage 112 3rd Class Saloon + 2 First Class Compartments
- Carriage 113 3rd Class Saloon + 2 First Class Compartments - 2003-2009 on WHR as 3rd Class Saloon +First Class Compartment + Buffet Store. Second 1st Class Compartment reinstated on the carriage's return to the FR in 2009.
- Carriage 114 3rd Class Saloon + Buffet