Trains between Norwich and London Liverpool Street will be disrupted this week.

From today until Thursday, some services to and from the capital will be delayed or be replaced with buses on parts of the journey. This is because of work being carried out to upgrade the line.

They are:

• On Monday, Tuesday, Wednesday and Thursday mornings, the 5am service will depart early at 4.45am.

• On Monday, Tuesday, and Wednesday evenings, the 20.30, 22.30, 23.30 Liverpool Street to Norwich services will arrive approximately 25 minutes later in Norwich.

• The 21.30pm will terminate at Diss, with bus replacement forward to Norwich.

•The 20.00 and 21.00 Liverpool Street to Norwich services will terminate at Ipswich with no connection forward.

• The 22.00 Norwich to Liverpool Street service will operate as rail replacement from Norwich to Diss, with a connecting train forward to London.

• The 23.05 Norwich to Ipswich will operate as rail replacement.

• The 19.30 Liverpool Street to Norwich will provide the last connections to Lowestoft, Sheringham and Cambridge from Norwich.