"Due to unrelated technical problems with some of our trains over the
past weekend, we have been forced to operate a revised schedule of
services today. On some services this may result in passengers having to
change at Doncaster. Connection times will be kept to a minimum and
staff will be on hand to assist. Most journeys provide passengers with
an arrival at their destination close to the scheduled time."

Well if you give away the very reliable Class 222's and get some not very reliable Class 180's, what do you expect.

Bring back the Class 86