I disagree that £16k isn't enough to live on. I could live on that - I wouldn't be living the high life but I wouldn't be struggling to survive on Pot Noodles either.
That would be approx £1,200 a month after tax and NI, @DerbyshireGirly. In this area, you'd be very lucky to find a one-bed flat for less than £700 a month. That would leave you with £500 a month.
Council tax (less single person discount) would be around £100 pcm, at that income you wouldn't be entitled to council tax reduction. Energy costs would be around £50 pcm, approx £25 for water, tv licence £12 and a cheap mobile around £18, with good data allowance so you don't need broadband. That reduces the disposable income to just a tad under £300 a month.
Spending £30 a week on food, toiletries, cleaning materials etc would account for another £130. If you need to travel to nearest big town for work (very limited employment opportunities locally), your fares would be £25 pw, so £100 a month.
That leaves £70 a month for absolutely everything else: any leisure activities/hobbies, prescription/dental/optical charges, clothes, haircuts, holidays, replacing household stuff, travel to anywhere apart from the nearest town (you could use your saver for that!).
Yes, you could do it, just, but it would be beyond grim. I'd regard that as existing, rather than actually living.
I have colleagues living on that sort of income. They are so hard up. They have to do things like not get all the items on a prescription because they can't afford all the charges, and can't afford routine check-ups at the dentist. One colleague had to apply to HR for a hardship loan because she couldn't afford dental treatment.
Then there are the staff on approx £21k, which should be much more manageable, but they have to provide a car to do their job, so that cost wipes out their additional pay.