I think the A1 is much nicer than the M6/A74M. It has improved drastically in the past few years and there is a lot more 3-lane stuff. I'm not sure how the timing would differ but I don't think there would be much difference.
Just Googled it and they say there is a difference of 4 miles and 16 minutes
Last edited by BobtheTrain; 10/04/15 05:20 PM.