In a couple of months I have an important lunch at a London members club (SoHo House). Dress code says smart casual, but I have never been before.
I am mid 40s, size 20 but don’t look big because I am tallish.
I want to be channeling a funkyish, “tech start-up but confident to operate at the CIO/CFO/CEO FTSE 500 level” vibe. I realise that is a lot to be asking from an outfit 
Any suggestions gratefully received!