M1 leave at Junction 9 

Take A5183 signposted St Albans and Redbourn - follow this road for approx 1.5 miles 

At the roundabout turn left signposted B487 Harpenden and follow this road for approx 1.75m 

At the roundabout turn left signposted A1081 Harpenden 

Follow this road and you will have Harpenden Common on your right for approx 0.5m 

Next roundabout straight across for approx 0.25m 

At the next roundabout turn right signposted Station onto Station Road 

Follow the road and go past the station keep going for approx 1m 

You will pass the Dolphin pub on your left and the Mercedes garage on your right. 

Coldharbour Lane is the next main left turning after approx 400 yards you will see the Allied Business Centre on your right - turn in and Unit 8 is on your right hand side.