I've name changed for this as I feel uncomfortable 'saying' it out loud even on the relative anonymity of MN.
I'm very wealthy, not Richard Branson wealthy but very, very wealthy by most standards. DH and I would be very comfortable even without my family background, I had a well paying job until I stopped to be SAHM. DH owns his own company (it's owned by shareholders but he and I own about 60% of the shares between us) and gets a good income and great dividends, in the 1990s he was a consultant in a very niche area and was earning up to £1k a day so we saved a lot then. When he retires he will probably be able to sell the company and our share will be worth about £2m. We were very lucky with the UK property market, we started after the late 80s property crash and (by luck not design) every time we moved we went to an area that was just about to shoot up in value.
My DM's family have historically been very wealthy too, about a decade ago I inherited £2m. My DC also inherited a good amount (about £300k each). When my DM dies, which is hopefully decades in the future, I will inherit more, probably another £3m or so from her. My DC will get £500k each from her.
I don't think anyone except close family knows how really, really rich I am. Obviously friends and acquaintances know I live in a comfortable (but not huge) house in a very nice area, but they don't know that we bought it for cash, or that we also have a lot of other property all mortgage-free (riverside London flat worth nearly £1m, development land that we are trying to get planning permission for, a holiday house on a lake, a holiday flat in the Med that we let out but don't use ourselves).