I've had 4 Regulars who no longer work in the 'Industry', afaik. And each of them are much-missed; and not just by me, I'm sure.
The first was a woman who worked under the name of Patrice in Parlours on the 'Punting Mile' of Whitefield & Prestwich in the middle of the last decade. Rumour had it that she re-surfaced 5 or 6 years ago under the name of Katrice in a Parlour in Birmingham.
Then there was Belinda who worked in a couple of Parlours: one - long-closed - in Bury; the other just off Cheetham Hill Road near Victoria station. She left the Parlours before working as an Independent in South Lancashire/Greater Manchester.
When she retired, I began to see Lustylush, who worked as an Escort in Nuneaton from about 2007-2010. I originally saw her to 'tick' having seen a BBW; but we developed a rapport so I saw her at least once every three months. She had one of the biggest hearts imaginable and we kept in touch socially when she had to retire for family reasons in 2010 until, sadly, cancer claimed her early last year.
The last Regular I wish were still 'working' is SarahJayneLeeds whom I saw from 2013 until she left the industry early last year. She left a big gap, which I think I'm only just on the verge of filling.
It would be uncharitable of me to name one or two SPs whom I regret having seen as often as I did.

Punting's taught me a lot!!