From the distant past!
Until the passing of the Street Offences Act by the Parliament of England and Wales in 1959, there was a thriving trade along the walkways of Hyde Park in London's West End. Plenty of young women would loiter on these paths or saunter very slowly and sometimes solicit male walkers with the offer of 'The real thing for five bob or a play around for half a crown darling.' Some would only offer the 'play around'. The real thing was full sex and the play around was masturbation. All acts were al-fresco and usually performed against a tree in the park.
At this time, before decimalised currency, there were twenty shillings to the pound, so five bob (shillings) was quarter of a pound and half a crown was one eighth of a pound. Since I usually had about a pound a week spending money, the chance of being wanked by an attractive young woman was not beyond my means.
You will hear much about the sexual restrictions of these times and the reports are true but there were also some loopholes. The girls themselves were either factory workers seeking to supplement their very meagre earnings or the wives of prisoners. One whom I often frequented was of the second category. When I approached, she knew there was no need for words and we would go to a tree where she would reach into my flies and extract my hardened member whilst I unbuttoned her blouse and handled her tits as she gave me my half crown's worth of relief.
The passing of the Street Offences Act brought in severe penalties for girls soliciting in public places and madc the trade uneconomical thus ending a long London tradition.
What also started to happen at this time was that people were gradually beginning to own motor cars and these were then used by those seeking girls and so the locations for making contacts also shifted. Prices also rocketed!