After passing the Park & Ride take the 4th turn left (Apsley Road).
Turn left onto the A431.
Penn Hill Road is the 1st right turn after passing the hairpin on your left.
At BMW garage on right, turn right onto Windsor Bridge Road.
At end of Windsor Bridge, Turn left on the A4 then the right fork at the traffic lights onto the A431.
Penn Hill Road is the 1st right turn after passing the hairpin on your left.