Directions to Clare Hall Laboratory

Clare Hall Laboratory, Blanche Lane,  South Mimms, Potters Bar, Hertfordshire EN6 3LD


By road

Exit M25 at junction 23. Follow signs to 'South Mimms and Colney Heath', keeping in the inside lane. Just before the service station the road bears left (do not go into the service station); Lantern is on the left hand side. Keep left at the mini-roundabout, drive over the A1M and take the next left turning into Greyhound Lane. At the end of Greyhound Lane turn left into New Road - this leads to Blanche Lane. Drive out of the village over the M25 and turn left at the mini-roundabout. Drive straight over the next mini-roundabout and Clare Hall is the first turning on your right. Please report to Security who will show you where to park.

By rail

The nearest station is Potters Bar. Trains for Potters Bar leave from King's Cross every 30 minutes and the journey takes 10-15 minutes. Taxis from the station to the Institute take approximately 10 minutes. We recommend using Potters Bar Radio Cars (01707 650077) which is located on the left as you exit the station. For more information on routes and timetables please contact National Rail Enquiries on 08457 484950 or visit their website at

By bus/tube

From Cockfosters (Piccadilly line) underground station take the underpass to the other side of the road, following the signs for buses to Potters Bar. The bus stop is located at the top of the steps. The 298 runs from Cockfosters underground station to Potters Bar station. On arrival at Potters Bar station, take the 398 to Clare Hall (or take a taxi, details above). The 398 leaves every 60 minutes from outside the station. Blanche Lane is the terminus and the journey takes about 20 minutes. At the terminus, alight and walk a short way down Blanche Lane - Clare Hall Laboratories is the first entrance on your right. For more information on bus routes please contact Sullivan buses on 01707 646803 or visit their website

Please report to security on arrival