£16,000 salary = £1,333/month
- £131.58 tax
- £83.95 National Insurance
- £7.50 student loan
= £1,110.30 take home pay/month
- £832 bills
= £278.30 disposable income.
That's really not going to be enough to last you out a month. I'm guessing you didn't put transport costs in bills, because that's another £110-£160 you've got to consider depending on which part of the city you live in and where you're commuting to.
That leaves you with, let's say, £150 for all of your food shopping, nights out, haircuts, clothes, toiletries, gym, gifts and unexpected disasters. I really don't think that would be enough. Could work if you cut your bills back by about £250 though as I reckon you'd need at least £400 to cover general living costs but ideally you'd need to be earning more.
You don't want to be living just on the limit and it really helps to be able to set something aside every month.