Hi Ellen, I know a fair few Catters, mostly in the UK, but some in Wales too - North & South. I go to lots of Festivals & will be at Sidmouth too but probably ensconced in the Middle Bar of The Anchor for most of the time.
A lot of UK Catters wear either the Mudcat Tshirt or a Badge to identify ourselves, so look out for these badges at festivals and clubs you go to. It'll have the Mudcat Logo on and the Badges have our Mudcat handle on them too!
Look forward to meeting you sometime,
Hil