BR Mk 1 First Open (FO) No 3109 was built 1961 at Swindon to diagram number 73 lot number 30697. It was initially preserved in 1984 as part of Waterman Railways charter fleet at Bounds Green. It was one of three carriages, together with FO 3106 and RBR 1678, which were acquired from there by the SVR in 1996, initially on lease but subsequently purchased by SVR(H).
It is usually used by the SVR as a restaurant vehicle, having seen use in both the Severn Valley Limited and Severn Valley Venturer dining sets.
Sources
Railway Heritage Register Carriage Survey
SVR Stock Book Ninth Edition