Hi mate,
Ive been told that there's a track in Grangemoor, i was also told its only £5 per day.
http://maps.google.co.uk/maps?q=wf4+4bb&oe=utf-8&rls=org.mozilla:en-US
fficial&client=firefox-a&um=1&ie=UTF-8&hq=&hnear=0x487962028bb8f8e7:0x4f441174ab29fce8, Wakefield,+West+Yorkshire+WF4+4BB&gl=uk&ei=jdg7Tqy mEoqeOtvmxdMH&sa=X&oi=geocode_result&ct=image&resn um=1&ved=0CBgQ8gEwAA
Give EatMyDirt www.eatmydirt.co.uk a call, i think a few of the guys that work there ride their pitbikes down there,
Other than that, Ive been using the pitbike track down at Doncaster motocross track.