Elise Adore was fucking amazing at blowjobs. She made me pop through oral sex nearly every time I saw her and I find it nearly impossible to cut through oral (2 escorts, the other being Ellie Rose of London, and 1 civvie girlfriend have managed that feat).
Unfortunately Elise Adore retired a few years back. In other bad news Ellie Rose no longer offers CIM.
Sexy Janet GFE of Birmingham was good at oral sex when I used to see her. She has lots of different techniques and allows CIM with swallow.
You'll find all 3 escorts in my reviews although only 2 are still working.