Excellent pictures. The time taken to preview the site paid dividends, as I think you had a great position and you have made the most of it. I thought you may have been able to get on the raised platform at the end of St. Georges Hall, as there was a camera set up there. I wouldn't mind seeing the pics from that position.;-)

I was quite happy will my pictures until I saw yours. ;-) I too used a 10-20mm lens, though I was much more to the left of your position, and didn't make the most of the lens or the event.. I used the portrait orientation, but over estimated the height of the fireworks. Lessons learned hopefully.

There's few of mine I do like though. Luckily. lol

Well done.