Modern, British, historical fiction novels preferably about rich people?

I know it sounds like I’m being very fussy haha, but I’m struggling so much to find this sort of thing by googling, and so I’m trusting in you on yahoo answers to give me a recommendation! You always seem better than what google can offer me..

Don’t dwell too much on the ‘modern’, i don’t really mind about that, so whatever you deem as quite modern is fine

Not fussy about what time period, but want something classed as historical fiction

I feel there are so many historical fiction novels about the poor, but I much prefer reading about the rich, middle/upper class. Anything of that sort

Do any of you have any recommendations that you think I might like?

So sorry for such a long description