[Closed] campsites in or around radnorshire

Hi, I'm trying to plan an introductory trip to mountain biking for my girlfriend (she's just brought a Commencal hardtail) I was thinking of taking her to Radnorshire as the trails don't look as hectic as Afan for instance. Does anybody know of any good campsites up that way that allows fires?

Or any other trails closer to home (Oxford) that could be a gentle (ish) intro for her? I reckon Afan or Brenin would be too much of a transition from what I've shown her in our local woods.

Cheers Dudes and dudettes.