Weekend rail passengers in Hertfordshire face disruptions for the next six Sundays.
Between February 20 and March 27, there will be no Thameslink or Great Northern trains between Stevenage and Alexandra Palace on Sundays.
Buses will replace trains at 15 stations including Welwyn Garden City, Hatfield, Potters Bar and Watton-at-Stone.
Great Northern trains between Stevenage and Alexandra Palace via Hertford North will continue to run.
Thameslink, Great Northern and long-distance trains will also run between London and Stevenage towards Peterborough, Cambridge and King's Lynn, but journey times will be extended due to a diversion.
On Sunday, February 27 buses will replace some early-morning trains between Hitchin and Peterborough, as well as between Stevenage and Alexandra Palace.
On Sunday, March 6, an additional rail-replacement bus will run between Welwyn Garden City and Peterborough or Cambridge until approximately 8.15am.
Thameslink has said that the disruption is due to engineering work on the East Coast Main Line.
Details of the disruption are on the National Rail website: https://www.nationalrail.co.uk/
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 The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.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