I done it in 4:20 but was caught up in some serious congestion. I didnt enjoy getting out of London, too many cyclists riding on the wrong side of the road against oncoming traffic causing all sorts of problems then trying to cut back in at junctions causing bottle necks! Not to mention giving a bad name to cyclists. Other than that if was a great day loved being able to race my mates and sprint for the line at the end with the crowd cheering us on. Made it up Ditchling Beacon which whilst it wasnt easy it definately wasnt as bad as a lot of people made it sound leading up to it. I would do it again but if I did would have to go earlier to avoid all the congestion.