Well I gave up reading all the squabbling so it's probably been posted already.
Banks can kiss my ass @ 0.5% interest.
I now treat my share trading account as my bank account.
Stocks and shares ISA is the first place to start..
Actually, no it isn't. Paying off any debts that are charging you interest is the first step but I digress.
So, stocks and shares ISA, that pretty much covers your 5K as you can have just over10K in there pr year.
Within that ISA I'd have a mixture of stuff to stave off any risk you might be worried about. Various solid FTSE100 stocks, a fund or two (see Hargreaves and Lansdown), gold, mining companies, energy companies and emerging technologies, especially green/ renewables.. etc. etc..
Make sure you make it a regular investment ISA and drip feed the account over the coming months as you research the different stocks, that way you will pay massively reduced trading/commission costs. (£1.50 vs £8.95)
Pays your money, takes your choice