Another example of this was a Slovenian lass who offered a superb service at Blair Street under the name of Clara about a decade ago. She moved to London Street under the name of Meg and while still popular with the LSS faithful offered nothing more than an average service with kissing and owo off the menu.
I recall a now retired Scottish legend who worked at LSS/BSS and NTS (who you have seen) telling me of a duo she had done with Meg which was so embarrassingly poor that she demanded to know the reasons behind it. Meg shrugged and said why should she try when she could get away with doing as little as possible at LSS.
went with meg a few times , first at blair st, then at london st, on the first meeting, she put her finger in her mouth, then her fanny, then in my mouth, an amusing way of introducing herself, her erotic preference was actually for women, to be fair i didnt see any drop off in service when she moved down the road.