God, that was stressful. Managed to get 1x ticket for the balcony row D (don't like heights but it'll have to do!) Had a front stalls ticket in the basket, got to the final payment confirmation page, then it crashed and went back to the start.
Managed to get another ticket in the basket. It crashed again, checked my account and the ticket was luckily there and had gone through
Gotta plead to my boss at work now to let me have the day off as I have to give 6+ weeks notice for annual leave!
No joy for the book signing though...