Pay off your debts first.
Use 10 - 20% on BTC and cryptocurrencies (including coins like PHS which pay you interest every few days).
You could put the rest into more traditional investments, or use some of this remaining amount to start a business (preferably online and low maintenance) if you are that way inclined.
I don't know enough about the UK property market to know if buying property is a good idea.
Good luck and just relax - don't rush into anything, especially if it involves a size able amount of your windfall
