Whether Northbound or Southbound on A1 (M) exit at Junction 6. Follow signs to Welwyn Garden City. Turn right into Bessemer Rd (signed Welwyn Garden City) and 1st right into Knightsfield. Ground entrance is ½ mile on the left next to No 290 Knightsfield. The journey time from Apex Corner is 20-25 minutes. Postcode - AL8 7NQ.