Greater Anglia rail services will be cut to the bone next Friday, February 2, because its drivers will be staging a one-day strike.
There will be a limited service on the main line from Norwich through Ipswich to London - but no trains on any other routes in the region.
The one-day strike comes at the end of a week of action by the drivers' union ASLEF as part of their long-running pay dispute.
The drivers will be taking action short of a strike earlier in the week which could lead to a few cancellations but most services are expected to operate as usual.
Anyone needing to travel on the main line on Friday is urged to check with the Greater Anglia website because there will be fewer trains operating - and services will start later and end earlier than normal.
The disruption on the Friday is the start of issues for travellers heading to London because Network Rail work on the main line means there are no through trains to Liverpool Street over the weekend - a bus replacement service will operate to Newbury Park tube station.
Jamie Burles, Greater Anglia’s managing director, said: “Unfortunately on the 2 February, no services will run at all on most Greater Anglia routes.
“On the days affected by action short of a strike, the vast majority of services will be running as normal, but there will be some alterations and cancellations across our network.
“Please note that an extensive engineering works programme will also take place on Saturday and Sunday 3/4 February.
"This work is extremely important to help maintain the safe and reliable running of the railway and make it fit for the future. A rail replacement service will run while the work takes place.
“We are sorry for any inconvenience caused by these service alterations and advise customers to plan ahead and check before they travel.”
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here