Hey sorry for the late replies, been a busy few days.
No, it was NEVER a sexual service. All of our submissives were screened for weeks/months before being taken on, and 9/10 time it’s a male looking for a sexual element to their session.
I did this from ages 23-28, and on average we’d charge £100-250 a session depending on their kink.
My favourite regular would always come in with flowers and chocolates, very VERY appreciative of having 2 women who didn’t degrade him for his proclivities. He would spend 1.5 hours cleaning our home, dressed in a traditional maids outfit, waiting on us hand and foot. Then would finish with 30 mins being a foot stool, with us verbally abusing him.
All of our subs were professional men and worked in high power jobs, usually in stressful situations - a lot of them just wanted to be dominated by a strong female, being told what to do instead of doing the telling.
Being a non-sexual, lesbian service, we also had a clause in their contract - if they ejaculated then the session was over and that was it. That only happened once and my GF at the time made him clean himself up and leave 
I’m incredibly glad this was something I did when I was younger bcoz I have some great stories now, and it made me SO much more confident! I was bullied on the daily when I was younger, and being paid to control someone’s every movement is a very powerful feeling.