Park at Irlam station, so come off M6 at Warrington, head east about 3 miles park up at irlam station, only half dozen stops to Oxford road, then a 5 minute walk to the stage area.With the size of the crowd and road closures, you would be better parking up short and jumping on a train. If you are coming down the M6 suggest Warrington West. Only a couple of quid to park.