hi and welcome to the forum,
in my job i visit many people in the naveres area, and can say that there are quite a few english people in the area, nr anna, chella, enguera, alberique and ofcourse in xativa! one of the main areas for contact appears to be the xativa trading post, but you can also have a look in the inland trader (a free newspaper) that has lots of clubs and groups mentioned - go to inlandtraderonline.com and you can even download copies!
hope this helps.