Customers who have an advance ticket with a Northern origin or destination station, where we offer the connection using another train operator’s service, and want to travel on a different date than is printed on their ticket, can travel on either the day before or the day after the date that is printed on the ticket

This will be honoured by the following operators: Chiltern, C2C, Cross Country, Gatwick Express, Great Northern, Greater Anglia, Great Western Railways, Hull Trains, London Northwestern, London North Eastern Railway, ScotRail, South Eastern, Southern, TransPennine Express,Thameslink, Transport for Wales, Virgin Trains and West Midlands Trains.