I would never win. Why? I would never play. Only fools play the lottery. This is evidenced by the fact that you never hear of a lottery winner going on to massively increase their wealth (that is, through wise investments). And, more often than not, they end up losing everything within a couple of years.

Anyway, if I were to win £50m, after taxes, in the national lottery, I would:

 - Divide my money into three sections: short-term (basically, for immediate use), medium-term (10-20 years), long-term (20years+, retirement, etc).

• £5m in the short term
• £35m in the medium term
• £10m in the long term

- I'd use the short term money to finance my migration to the USA (looking for a state with a the best weather/liberty mixture... if we're pretending I've won the lottery, let's also pretend Southern California has become a state), buy a plot of land, build my dream house, and live the life of riley.

- The medium term money will be used to finance a few medium sized businesses, whose profits will let me maintain my life of riley lifestyle into the future, whilst also creating jobs, and generating growth (both of which will be very satisfying outcomes). A few of these businesses that I would set up include: an "alternate" sports store - selling gear and promoting niche sports, such as lacrosse, and also extreme sports (surfing, skating, etc); introduce a chain of restaurants, loosely based on the family-friendly British pub, but Americanized (kinda like what Starbucks is to coffee... without the bad reputation); some kind of alternate energy research company; and, finally, I'd set aside around 5% of my medium-term money on micro-investments.

Micro-investments are, in my mind, a far better way of improving people's lives when compared to welfare and charity: basically, investing small amounts of money in high-risk, low return businesses, that can promote entrepreneurship in some of the poorest parts of the world. Rather than making people dependant on welfare, or charity, micro-investments give them the means to depend on themselves.

- Finally, the long term money, I will probably hire a couple of investers to manage: keeping it in shares, bonds, metals, various savings accounts, whatever. This section will be the slowest growing, but should also be the least risky, hence why it's long term.

The idea will be, that both the medium and long term portions of money will grow with time. The long term portion should grow a couple of percentage points above inflation - any returns greater than that will move into the medium portion. The medium portion should hopefully continue to grow at a fairly nice rate. The medium portion will be my bread and butter: as a high percentage of the returns will be going into my short term portion, to keep it topped up to the £5m level (+inflation) as a long-term average.

All-in-all, I think this system would allow me to have a very comfortable life, with persistant growth of my wealth, and also a nice, safe fund for me to retire into.

Cocaine & hookers FTW!!!

I would build my own playboy mansion,have sex with hundreds of beautiful women,I would do this so much,that the money would run out and I'd be living out on the streets 8 months later,but it would be well worth it.lol

I'd probably try to live off the interest after bringing the money to a trustworthy bank (if such a thing exists...).
Then I'd buy me a house of course, because I hate paying rent.

Buy a home.

Buy a car.

Buy the stuff needed to have a nice home and car.

Deposit some in Chinese bank account just in case the USD becomes useless.

Enjoy the rest of my time in this life.

If it were the £161,000,000 just won, and so far unclaimed, on the Euromillions I would first of all die of shock however once I recovered my plan would be as follows.

Seeing as all lottery winnings in the UK and Europe are tax free I would leave £150,000,000 in the bank to acrue interest, note interest on the winnings is taxed, and live happily for the next couple of year on £11,000,000. Firstly though I would choose to remain annonymous, money pests stay away!

with the £11,000,000 I would
- Go on my long desired 'Rollercoaster Tour of the World' brining friends and family with me, if they so wanted.
- Pay off all my parents debt and their mortgage, I would likely actually buy the house off them though because I like it, and design myself the perfect home which would be nothing like most of what you see on 'Grand Designs' or the like which are all just glass walls everywhere and soulless.
- Get a seriously nice car or two
- Donate to select charities such as 'Help for Heroes', the 'NSPCC' and 'Water Aid' after all "just £2 a month" would be a pretty simple feat with that kind of money.

Then after the £150,000,000 had morphed into the much more attractive sum of £200,000,000, after several years of interest, I would get ambitious by funding my own 'creative' company. By 'creative' company I mean it would have its hand in just about everything from novels and comic books to games and TV and indie film production. All of that should be fundable on the interest alone which at that point would be £9+ million a year.

I would like to point out an new point for discussion

1. Would you tell your friends? If you are not going to let them leech off you then they will resent you and you wont be friends for a long time if not ever. Even your best friends would resent you if they didn't get a share of the pie.

Also you would become a resident of Monaco because there is no taxes on personal income so if you won 30 million and put it in a high interest 6% account then you can new 5 million a year. So just live a few years normally and after 5 years you have 25 million to spend then you can use that to fund a games studio.

I would probably give most to my parents (I owe them everything) and some to unicef. It depends on how much I would win. If it was much, I would probably also buy a house and a good 3dtv for myself :)

Well you have good taste with the other German cars you picked. I'm just trying to save you future embarassment when you do win the lottery. 

I probably wouldn't tell anybody, not even my wife.