Engineering work between Grantham and Newark is taking place from 1200 on all Saturdays in June, and lasts until mid-day on each following Sunday. This effectively means no trains operate between these two locations.
National Express East Coast are providing bus replacements between Grantham and Newark.
Hull Trains have re-timed some services with Saturday evening journeys being replaced by buses between Retford and London.
Grand Central are providing a through service between London and Sunderland and are using the "Joint Line" (Peterborough - Lincoln - Doncaster) to divert their services. The 1127 and 1735 from King's Cross are diverted this way as are the 1230 and 1730 services from Sunderland.