Anglophobia

from WordNet (r) 3.0 (2006)

Anglophobia
    n 1: dislike (or fear) of Britain and British customs [ant:
         {Anglophilia}]

from The Collaborative International Dictionary of English v.0.48

Anglophobia \An`glo*pho"bi*a\, n. [Anglo- + Gr. ? fear.]
   Intense dread of, or aversion to, England or the English. --
   {An"glo*phobe}, n.
   [1913 Webster]