Thanks for the replies! Could you perhaps point me to the reviews on Helen? I see one on the agency site but it's just a one-liner!
To elaborate on what I'm looking for:
Busty (d cup+) eastern European ladies who offer gfe and are available for incall (don't really have a set budget but I think between £200 to £300 for the hour is what I'm willing to part with).
In terms of a particular area around London - I'll be moving around so no real limitations here.