We were at Woodchurch for this excellent event on the Saturday and Sunday.
There were quite a few (OK, lots) of A&P rollers but several were new to me and I believe only recently out and about. Not to mention plenty of other engines too.
It didn't rain although bright sunshine was in short supply.
See
http://www.internationalsteam.co.uk/.../ukindex19.htm
Enjoy and let me know of any mistakes or omissions, some of the rollers are very similar...