Haha, well remembered! Some of it has gone on holidays and on the M3, but I've still got about half left. I've never really had this much money 'going spare' before - in the past it has always been for house deposits, etc... but now I've got a decent house, two fast cars, etc... I don't know what to do with it?! Having good money in the bank is very reassuring, but I can't stop myself looking at E90 M3s, M5s, Caymans, 911s, Range Rovers, XKRs, etc... Keeping the cash seems the sensible thing to do, but I'm not sure it's the right thing to do, hence the question about what everybody else does... Spend or save?!
If you're pretty sorted and have achieved what you need to achieve materially, then you should maybe consider how to get out of the rat race. Invest in property or the markets, anything you can do to accelerate how quickly you can pay your mortgage off. Even overpaying your pension is a great investment as it's tax free money. If you can semi-retire by the time you're 50, you're laughing.