There is ample parking on the roadside by the railway bridge (ST512289).
Most of the lanes in this area are exceptionally rich botanically. Walk north from the railway bridge and take the first track on the right. This climbs steeply, eventually reaching a crossroads. The track to the left is one of the best sites in the county for Wild Liquorice (Astragalus glycyphyllos) and on the west verge of this lane a small colony of Field Garlic grows. Retrace your steps and carry on straight across, on the east side of the track Dwarf Elder is found and a little further along on the west side of the track is the entrance to Green Down Nature Reserve. Make your way across this extremely rich grassland reserve, the stile at the far end taking you across a horse training track before descending down a fieldside track to the parking area. The verges of this track are good for Small-flowered Buttercup and Corn Parsley.