There will be changes to mainline train services operated by One on Sunday , Bank Holiday Monday and June 6.On Sunday and June 6, due to track engineering work in the Colchester area, trains will operate between Norwich and Colchester only and buses will replace trains all day between Ipswich and London Liverpool Street.

There will be changes to mainline train services operated by One on Sunday , Bank Holiday Monday and June 6.

On Sunday and June 6, due to track engineering work in the Colchester area, trains will operate between Norwich and Colchester only and buses will replace trains all day between Ipswich and London Liverpool Street.

Train services from Norwich, Diss and Stowmarket will connect with buses at Ipswich for onward travel to London Liverpool Street and vice versa.

Customers are advised that trains will depart from Norwich five minutes later than stated in the normal Sunday timetable.

Buses form Ipswich will depart at 55 minutes past the hour and will run non-stop to London Liverpool Street, arriving approximately 10 minutes earlier than stated in the normal timetable.

In the opposite direction, buses will depart from London Liverpool Street 10 minutes later than stated in the timetable and run non-stop to Ipswich, connecting with train services to Norwich.

Trains will depart from Colchester to Norwich two minutes later than stated in the normal Sunday timetable.

Train services between Harwich International and London Liverpool Street will also be replaced by bus services all day and will operate according to the normal Sunday timetable.

On Bank Holiday Monday , due to track engineering work in the Witham Area, trains will operate between Norwich and Colchester only and buses will replace trains all day between Ipswich and London Liverpool Street.

Trains will depart from Norwich as stated in the normal Bank Holiday timetable, except for the 8.05am service, which will depart five minutes earlier.

Train services from Norwich, Diss and Stowmarket will connect with buses at Ipswich for onward travel to London Liverpool Street.

In the opposite direction, buses will depart from London Liverpool Street at 45 minutes past the hour from 7.45am until 8.45pm. There will also be a 5.40am, 10.30pm and 11.30pm departure, all connecting with trains at Ipswich for onward connections to Norwich.

Train services between Harwich International and London Liverpool Street will also be replaced by a bus service all day and will operate from Harwich at 10.50am, 7.30pm and from London Liverpool Street at 8.20am and 5pm.