On the official site, the reason given is ‘Cut Leg’.
Self certificate simply means that the trainer himself provides the explanation, rather than calling in a vet and getting a certificate from him, which costs money.
A horse which is a non runner with a self certificate cannot run again for six days – so connections couldn’t have missed Stratford with a self certificate and then run at Fontwell today.
I can’t guarantee this, but I suspect the horse had already been declared for Fontwell at 10:00 on Friday, when the Stratford race was re-opened until 10:30 due to a lack of runners.
AP