Yea I've done a good amount of extra work on it. Turned down about 3 months of work on the latest season as I just opened my own gym and wouldn't if had the time.
Some of the sets were huge with 1000s of extras it's a massive production but I was lucky enough to be part of some of the smaller sets and I've spent some quality time with pretty much all of the main cast. The actors who play Jamie and Ayra were the most friendly they spent time getting to know most of the extras.
I've attached some images of me on set and on screen