Ideal time if the roads are empty...but silly to suggest it isnt a proper record. I'm sure traffic levels 20, 30, whatever years ago were probably very low, just the cars and technology weren't the same to enable faster times.
But sadly public opinion of this sort of thing, especially in current times, do make it something a little less impressive and not to shout about.
Motorists and car enthusiasts are always under attack, and that sort of thing doesnt help.
And I wouldnt want to be anywhere near the M25 at any time lol