Hi all. We always use chunnel for summer trip in July but have always gone M25 via Dartford but we are thinking what the other direction via Slough would be like. We always do a night drive anyway through England as we get off the ferry at Holyhead around midnight and drive on down for an early crossing of channel. Does any one with experience of both directions on the M25 think the Slough direction is any better, or is the M25 always a fecking disaster...? Thanks