37798 & 37670 pass Brentry on 8 June 2002 with the Pathfinder Tours 1Z37 07:03 Crewe to Portbury Automotive Terminal ''Post Festive Freighter' railtour. The train has just emerged from the 302 yard long Charlton Tunnel, on the Filton to Avonmouth line. The village of Charlton was demolished in the 1940s to make way for runway extension at Filton Airfield (later Bristol Filton Airport).