I guess the same principles apply no matter how much you have:
Naturally pay off all your debts first.
Don't chuck in your job straight away - see if you can enjoy it more, and keep things in perspective - life should be good, but if your home life is pretty crap, then adding money to the mix ain't always going to help.
Don't move to a big isolated house either - you don't want to live in a gilded prison.
Tell no one - not even your kids (money early in life can be a curse) - and you don't want to worry about kidnap and blackmail attempts.
How about splitting the money into various diverse investments:
Get plenty of the best rate 3 to 5 years bonds, but no more than 100k in each bank to get some FSA protection. Make sure you maximise tax free savings in ISAs NS&I bonds etc.
Another 100k or so lent out on Zopa so you can feel you are helping to fight the man with good rates
Put half (500k) in stocks - drip buy into rock solid things like oil, gold, silver, copper, and tracker funds in Brazil, Russia, India, China, add some Euro and some Dollar denominated trackers. Avoid individual company shares unless you really know something.
Set up a shell company to give money to any of your friends you want to help - send them a "You have won a Readers Digest draw" type letter enclosing a cheque - They ain't going to query it! The shell company stops them finding out its you, and avoids the risk of souring frendships through envy and jealousy (e.g. "You gave Fred 3000, but you only gave me and Mary 5000, and I bought a Ferrari and cant get it serviced now - you stingy git!"). Now you can also tell your friends you got 10k in the post, and have your house done up, and get new cars - most people cannot add up, and wont realise you had the biggest win! Tell everyone you got a bargain on things you bought (if they ask tell them a silly low price and an eBay or liquidation sale story). If your win runs to it, buy property in other currency zones (Euro, Dollar). You can always tell friends they are time shares, or you are house sitting, and its not yours really.
Go on cheap looking holidays so no one suspects, but fly business class, and use the cheap destination as a stopover to somewhere better.
Give some to causes you support, it'll make you feel good!
If you've really won a lot, I'll be happy to manage all this for you - for a very reasonable fee!
Although I'm not lucky enough to have won the lottery myself I can't
> help wondering "What if...?"
>
> So I'm just going to throw the scenario out to see what others think. >
> You're a UK citizen who's just discovered you've won the lottery! >
> It's been a good week for winning tickets so you've had to share the
> jackpot with several others but you're still £1,000,000 richer! >
> You put the money into a high interest bank account and retire, planning
> to live off the interest. With the best rates being somewhere in the
> region of 3.5% - 5.0% you realistically expect to receive £35,000 -
> £50,000 pa. However, after income tax that figure falls to roughly
> £30,000 - £40,000 pa: Ouch!
>
> In order to improve your returns a different strategy is needed. >
> 1. You need a tax advantage. You've heard that low rates exist but where
> in the world would you find them and how would you qualify?
>
> 2. You need to invest but in what? Hedge funds, wealth management,
> trusts, portfolios? Now you're confused!! Are these options suitable or
> should you be looking at something else?
>
> I know there are many knowledgeable people out there so this should make
> for an interesting discussion. Please feel free to provide suggestions,
> testimonials, comments, solutions or just about anything you think might > be useful.
>
> Look forward to hearing what you all have to say.
>
> Abby Rhodes