 The extension from Wotton to Wood Siding was complete by 17 June 1871; the opening date of the northern branch to Kingswood is not recorded, but it was not fully open in February 1873.The London and North Western Railway began a dedicated service from Quainton Road, with three vans a week of milk collected from the Wotton estate shipped to the London terminus at Broad Street.The only passengers were estate employees and people accompanying livestock.