One circuit in Hertfordshire, compared on the things that actually differ: what a session costs per minute, how long the track is, and how young drivers can be.
The youngest age accepted anywhere in Hertfordshire is 3 , at Rye House Kart Raceway. Height matters as much as age — most circuits also set a minimum of 130cm or 140cm, and a child who meets the age but not the height will be turned away at the gate. Each listing shows both.