Last weekend saw this event's 50th anniversary rally.
We attended on the Saturday and while, as expected, there were many engines that had been at Onslow Park in Shrewsbury two weeks earlier, several had not. including two portable engines which need restoration and were making their public debuts:
https://www.internationalsteam.co.uk.../ukindex25.htm
With 41 engines present, I believe that this was the largest ever turnout here.