Passengers have been told to check their train times, stations stops and routes as timetable changes come into effect next month.

Southern, Gatwick Express, Great Northern and Thameslink Services will have a timetable change which will come into effect from May 20.

The timetable change in May is part of RailPlan20/20.

It will deliver new trains, new systems, better stations and a new timetable to increase capacity, reduce crowding and provide new journey opportunities, transforming journeys across London.

To find out how your own personal journey will be impacted here’s what you can do.

1. Head to your favourite online journey planner (this could be National Rail or Southern Rail or any of the Apps that provide train data.

2. Select your usual Journey (such as Earlswood to London Victoria) and the time of day that you would normally travel.

3. Update the date of your journey to be the 21 May 2018 (the first day of the new timetable being in place)

Note, if you put in a specific time of the train you would normally get you may want to wind back 30 mins at least. Many trains will be running slightly earlier than they are currently timetabled.

Updated timetables can be found on railplan2020.com