Nottingham Forest in the FA Cup semi-final and London Marathon mean more people travelling.
Essential engineering work means East Midlands Railway (EMR) and Thameslink trains all using high level platforms at St Pancras and EMR will run a limited service.
Queuing systems will be in place at stations and trains are expected to be full and standing.
EMR Intercity services will be limited to one train per hour and customers can expect queues and may not be able to sit or board their required service
If the match goes to extra-time the number of services back to Nottingham are very limited
Customers who must travel between Nottingham and London St Pancras on Sunday, 27 April, and are not going to the match, are advised to travel after 2pm from Nottingham and before 7pm from London
Customers can use Advance Purchase tickets at different times to avoid the football traffic
Queuing systems will be in place at stations and trains are expected to be full and standing
Customers with reservations are able to join bespoke queue at London St Pancras International
