you can register valuntary for VAT if your making less than £61,000 per year, but you must be a declared sole trader or registered with companies house...
it has become defficult to register for VAT as alot of fraud is taking place. however if you legitimately are running a company you shouldnt have a problem registering.
you will be able to claim VAT back on all your purchases and pay VAT on all your sales
Also forgot to add you don't wait untill you have end of the year, you need to register as soon as you earn over £60,000 in a year. For example you could earn £62,000 in 9 months which would mean that you would have to register then and not wait until the end of the tax year.