My work involves advising people who have wealth of £10m+. Generally has been created from building up a business which has been sold, or has become large and they take a very decent salary/dividends from it which have enabled them to diversify their wealth into other investments.
One family, dad, son and daughter, probably have a collective wealth upwards of £500m, if not a lot more. The dad has a £XXm house in Oxfordshire and liked to pootle around in a Fiat 500 until he upgraded to an Audi TT. He lives on his own but has a housekeeper. Spends most of his time 'administering' the family trusts (holds c.£150m) and rubs shoulders with Oxford's finest to get early dibs on investment in start up companies (one such investment was about £8m and became £80m about 7 years later).
Son and daughter live in London, both get c.£1m each from trusts left behind from the maternal side. They also get a few hundred thousand from the main family trust, at times with lump sums if needed (both recently got about £3m for their homes). One is attempting to set up his own business (very much loss making, seems more to be having fun under the guise of networking) and the other works part time since having kids. Both are married to fairly comfortable partners but nothing close to their levels of wealth.
Dad is a bit of a grump, son and daughter are absolutely lovely.
In my experience, those who are super wealthy (£50m plus) are lovely, down to earth people. You wouldn't know they are wealthy and they don't show it off on purpose (such as obvious designer labels). Those that are within the bracket up to £10m tend to be quite penny pinchy, boastful about wealth and perceived status. I wonder if this stems from insecurity as while a few million is a lot, realistically it isn't enough to support a flashy lifestyle for very long.
My job very much feels like I'm working in a bubble most of the time. I am decently paid for what I do but very much poor in comparison to my clients.