Rail passengers are facing a day of disruption due to overrunning engineering work in Cambridgeshire.

The problem is at Dullingham, four miles south of Newmarket, and has left all lines in the area blocked.

Abellio Greater Anglia (AGA) has said on its website disruption is likely to last until midnight tonight.

It has warned services between Ipswich and Cambridge may be cancelled, delayed or suspended between the latter and Bury St Edmunds.

Some services will be diverted to Ely where they will terminate but connect with other AGA services and those of Great Northern and Cross Country.

Trains from Ipswich to Cambridge will leave at the advertised time and take one hour 15 minutes to travel to Ely, with the reverse service leaving Ely at the advertised time from Cambridge (44 minutes past the hour).

AGA tickets will be accepted on Great Northern and Cross Country trains between Ely and Cambridge, while a replacement bus service will also run between Cambridge and Bury St Edmunds calling at Dullingham, Newmarket and Kennett, taking around 90 minutes.

Services between Ipswich and Peterborough are unaffected.

A spokesman for Network Rail, which manages the railway infrastructure in Britain, said: “This weekend we were installing new track as part of our Railway Upgrade Plan to deliver more reliable services for passengers.

“We are sorry about the disruption this morning between Cambridge and Bury St Edmunds.

“Our focus at the moment is to safely reopen the railway and engineers are on site working as quickly as they can.

“We will review what happened to determine what lessons can be learnt.”

The spokesman added the work was not completed in time to allow services to run this morning.