I’m delighted to be able to report that the issues at St Pancras over the two bank holiday weekends in May are being resolved. A GTR spokeswoman said:
We apologise to the passengers impacted by this charging error. As soon as we were alerted to the isolated issue our revenue team worked with the technical team at TfL to ensure that everyone who was overcharged would be refunded automatically. These refunds should all be issued early next week. A permanent fix will be applied as soon as possible. In the meantime, we have agreed a process to avoid any impact to customers.