Can i get braces on the NHS ? UK?

I've been to the dentist today and have been discussing options for the 2 gaps in between my teeth. Both number 2 teeth were knocked out as a child and as a result now i have 2 1cm(ish) gaps, one either side of my front teeth. All the options sounded great but so expensive. I can't possibly afford them as i have a 6 month old baby and rely on my benefits at current to keep us afloat. Will i be able to get braces on the NHS or even at a cheaper rate ? My teeth make me feel so unhappy i just want a nice smile.