Charlotte from Aphrodites Bolton/Sheridans of Salford can take it pretty damn deep. Saw her a couple of weeks ago and she spent pretty much the whole half hour with my cock in her throat, right down to the base. Insisted when I was about to come that I stick my cock all the way in so I came straight down her throat. So I did - I believe the result was what is known as a "white dragon" i.e. not only did it go down her throat at this point, but also out her nostrils!