- From M25 J20 take the A4251 towards Kings Langley
- At mini roundabout turn right onto – Home Park Mill Link Rd.
- At the T junction turn left onto Station Rd
- Pass the old Ovaltine factory (now flats)
- Pass garge on left onto Primrose Hill Rd, pass the Bell pub
- Pass a park on left and take next right into Harthall Lane
- Go under railway bridge No. 16 is 200 yards up on the right