Leave A1(M) at Junction 7 towards Stevenage.
Turn left at 1st roundabout onto Gunnells Wood Road.
At 2nd roundabout, turn right into Fairlands Way, go under railway line and turn 1st left at next roundabout.
Take 4th exit at next roundabout, then first left into Gates Way, followed by a first right into Ditchmore Lane.