Take the M60 to junction 16 (M61) and join the M61 northbound following signs for Preston.
Stay on the M61 for 9 miles to junction 6 (A6027, Chorley).
At the roundabout, turn right (exit 2 of 3) onto the A6 (Chorley Road) towards Chorley.
After six and a half miles, turn left at the roundabout (1 of 4) onto Duke Street.
Take the second left onto Ashby Street and the entrance to the car park is the second right.