East Midlands Trains staff strike over pay and conditions
Rail travellers face disruption as East Midlands Trains maintenance and engineering staff hold a strike on the first week of the school holidays.
About 80 Unite members at depots in Derby, Nottingham and Leeds are walking out over a "paltry" 2.75% pay offer.
East Midlands Trains said its offer was "very reasonable and fair".
A total of 13 services on Sunday have been cancelled and a number of other routes are affected. The strike is due to end on Thursday.
Services between Nottingham and Mansfield, Doncaster and Peterborough via Lincoln, Newark and Cleethorpes via Lincoln, and Derby and Matlock are affected.
There will be a bus replacement service between Leicester and Lincoln.'Reasonable offer'
The Unite union called on management to improve on the pay offer, which it said has now been taken off the table.
Regional officer Mick Millichamp said: "Our members have worked hard for this company, adapting to the many changes asked of them.
"However, they were very disappointed with the current paltry pay offer, now withdrawn, at a time when household bills are going through the roof."
A post on the East Midlands Trains website said it had put forward "a very reasonable and fair offer".
It continued: "We are therefore disappointed that Unite has chosen to take this action, clearly attempting to cause disruption for our customers."
There will be normal service between Nottingham and Skegness and Liverpool Lime Street, Manchester and Nottingham.
Services to and from London may operate with fewer carriages but otherwise as normal.
The majority of services will run as normal between Derby, Uttoxeter, Stoke on Trent and Crewe.
There will be changes to the Liverpool to Norwich service.