its very close to the go-kart track i remember a while ago there was a post with details about this place
**** UPDATE*****
Address:
If you never been .. then take a trip to sunny Dartford.
Track is just of the M25 at junction 1a,
Take A206 to Erith/Crayford,
Go across first r/about
Take 2nd exit at next r/about into JOYCE GREEN LANE
50 metres turn left into JOYCE GREEN LANE (again
)
Track is 400 metres on your left by green porta cabin.
Please Book in at green porta cabin before driving past Blue Snack cabin to track.
Oh.. and please please remember that you need the following to ride.
Boots that go past your ankle (NO trainers !!! ) full lenght pants...NOT shorts ....A top with sleeves and gloves.. and your crash helmet !!!
Googles also a good idea.
For more info just ring LEE on 07717532139