Cheers Dave!! I'll take the compliment from you!
Just copied this from the club website for the Non sat-navvers
Directions from M1 Junction 14:
Take A509 signposted Central Milton Keynes.
At first roundabout (Northfield) take 3rd exit onto H5 Portway.
At next roundabout (Pineham) take 3rd exit onto V11 Tongwell Street.
After 400 metres, take the turning on the left (signposted "Helipad").
Go through the yellow gate and follow the road down and under the bridge - the track is straight ahead.
Checked it on google maps satellite, and it seems OK.
MM