http://www.lyddenracecircuit.co.uk/bike_track_days.htm
http://www.lyddenracecircuit.co.uk/map.htm
8x 15mins sessions.
No passengers, But no crap rules about overtaking, just drive as you want as long as safe, and not stupid.
Good track, and always great fun.
i'll be doing it in my xr2tt, with my Brother and a few mates.