If you look on facebook there is a page for players in wales. Here is a link that might work:
https://www.facebook.com/groups/590600317728420/
or search: Wales
LOTR and Hobbit gaming group
The majority of the page is Cardiff area typically play at Firestorm.
Unfortunately I am Mid Wales in Aberystwyth so don't have much chance getting south :( There is a small group of us here though.