So, this is likely to be a romance of sorts.
Cinderella - the pauper girl who meets the Prince...but told in Modern Day London.
Our "prince" is a impeccably tailored man in his late 20s from the London "super rich". Owner of a penthouse Kensington apartment.
Our young lady will be an 18 year old from a Catford council estate.
We can keep a nod in the direction of Cinderella by starting the story with her losing a shoe on a night out ...he comes to her aid.
Essential to a partner for this is a writing partner who "gets" British working class chav culture and can pull off the role of our young lady well. At the start of our story she will he a proper chav...and basically, what would probably be referred to in London as a cheap dirty slag...but there is the potential for transformation here. :)
The idea is that at different points in the RP both partners will be taken out their comfort zones in different ways.
Open to lots of story development and episodes here. At the start, I think there would be a realisation from both characters that they are far too different for a relationship to work...but what starts as an encounter becomes more.
To reiterate: really want to write with a female partner who instinctively knows to talk use terms like "arse" rather than "ass" :) - got to be able to get into the mindset of a chav girl.