From A5 Central Milton Keynes Junction:
Leave the A5 at A509 (Milton Keynes North & East) and head East onto the H5 Portway with McDonalds on your right. Ensure you are in either the left or middle lane at the traffic lighted roundabout and head straight over, continuing on the H5 signposted for the M1. Continue going straight over the next 6 roundabouts; at the 7th (Pagoda) turn right onto the V10 Brickhill Street (Willen Lake will be sign posted). At the second small roundabout (Lakeside) turn left in to the car park, continue over the large speed bump, followed by a smaller speed hump. Turn left into the small road.