I am going to take a look back at the end of the day ... summarise what actually ran. Thanks everyone for keeping the updates going ...
If something goes wrong one day, you say "oops" and fix it
If something goes wrong two days in succession, you fix it but then wonder if the failures close were a co-incidence.
If something goes wrong three days in succession, you have far more than a co-incidence - you have a problem.
On 26th, 3 passenger trains out of 14 scheduled failed to call at Melksham
On 27th, 1 passenger train out of 17 failed to call at Melksham and 2 more were announced as not calling, but in the end did call
On 28th, 5 passenger trains out of 17 scheduled failed to call at Melksham
We have a problem (again) - is it big a problem?
9 actual cancellations out of 48 calls scheduled is a cancellation rate of 18.75% ... against a target (I believe) of less that 2%
11 announced cancellations out of 48 calls scheduled is a cancellation rate of 23%.
Yes it is a big problem.