There isn’t an address as such for Haggs Hill - however, 100 yards up the road is a hotel who’s address is: Holiday Inn, Queens Drive, Ossett, Wakefield, WF5 9BE.
As you drive down Queens Drive from the M1 side, go past the Holiday Inn on your left. Drive past the football pitches also on your left (Thornes Juniors) and go under motorway bridge – immediately park up and you will see a path down the side of the motorway. Walk 100yds down the path and you’ll find the pitches.