Adam Owens put Wales in the lead before Adam Barry equalised, but Karlo Krzystofski's brilliant free-kick was enough to seal an amazing win for the home side, who are edging closer to a play-off place.
To add insult to injury, Edward Redwood was sent off for England after lashing out a kick at Jamie Harris with three minutes left, and the Monsters striker is likely to miss England's opening CSA EuroCup 12 game next year in Russia.
More to follow later.