From M6 north, take J15, follow the A500 for about 8 miles and take the exit signposted "Kidsgrove, Tunstall, Longbridge Hayes Ind. Est." The road swoops round and back under the A500. Go straight over seven round abouts, that's left hand lane, middle lane, left hane lane, middle lane (3rd exit but essentially straight over), left hand lane, right hand lane, left hand lane, but straight over all of them; if you aren't going up or down a (steepish) hill you've gone the wrong way.
After that 7th roundabout, follow the road down the bank (past a Tesco local store on your right), through a set of traffic lights (just after a speed camera) and you'll come to another roundabout just after a footbridge goes over the road. Turn right at this roundabout. Follow that road to the main gate of the site. Park up and the bird should be on the left of the main gate.
Those roundabouts are a pain in the backside if you don't know which lane to be in, and trying to get back into the lane you wanted to be in is almost impossible if you start off wrong, so thought the information useful.
Hope that helps :t:
Adam