I vote for Estuary English no that I've read all the posts and watched the commercials a few more times. I'm willing to stake my reputation as somebody with a degree in Linguistics (among others mind you, so I can afford to lose one reputation!)

I don't feel his dialect can be labelled cockney because he doesn't substitute a glottal stop for certain intervocalic consonants. it's other things too including his vowels, but I can't explain. To my ear, he's not as far along the spectrum as Cockney is when compared to EE.