Does anyone know if the casts have their own facebook? a genuine one...not someone impersonating them..Thanks

Where do I begin? Bradley and Katie did have one. katie de;eted her account, then made an offical page, but then deleted that one, and Bradley also deleted his acount. Now only エンジェル has one but she is rarely on it and does not reply to posts unless ur VERY lucky.
Link for Angel's: link

there is now an offical Merlin page which the Merlin producers run.
Link: link

Hope this helps. :)

its highly unlikely.

Only エンジェル has one in which she accepts fans. Katie and Eoin both have one too but neither accept ファン requests