was that aimed at me? sheesh I'm not saying it can't be done - and if Shoshnttosh reports back that they did it in 5-6 hours I'll be made up for them. But I suspect that with kids, they will be stopping a bit more than you did. So make that an optimistic extra hour - 5+1 = 6 Add on 2 hours for August as per your calculations = 8. And given that at the time I didn't know which part of Cornwall was the final destination 9 hours seems reasonable I used to live on the side of the A30 - in a house, not just, you know.. on the side of the road, for 3 years. Even visiting the in laws 3 miles away took an hour some days... But I would still favour going that way rather than the M4/M5 as you suggest