A former deputy chief executive of the Care Quality Commission insists she wasn't involved in any decision to delete a critical internal review.
Last week an independent report into the CQC's investigation of the deaths of babies at Furness General Hospital found evidence of a possible cover-up.
But Jill Finney says she and two other senior colleagues did not decide to suppress the review.
More top news
No trains will be running between Carlisle, and Edinburgh and Glasgow Central.
All Northern services at Carlisle station will be affected by the strikes, and replacement buses are in operation.
An earthquake measuring 1.7 on the Richter scale has been recorded in Cumbria.