I’m sorry Sceptical, but I stand by my post – it is ‘manners’ – people who aren’t ‘posh’, don’t have manners – so, if you have loads of money and don’t open a door for a lady, you ain’t (typed in purposefully), ‘posh’!
Now, ‘manners’ can mean numerous things, I agree, but if ‘they’ are good, ‘they’ are posh – or should I maybe define posh with re-wording it to ‘refined’ – not sure there is much difference tbh!
All in the eye of the beholder methinks!