Yes

well is what i was told when i had mine down 6 months ago

the test is free and you can get glasses worth £30

or if you want different ones. say for £80 you will still get £30 voucher but will need to make up the rest

this is in spec savers by the way x

i was told you still have to pay for eyetests and glasses etc? i did anyway!
x

i still had to pay because i worked full time. i think if you are on income support you are entitled x

yes we are on income support and its exactly what marie said. you are alloed upto the value of £30 for free, and if you go over you have to pay the difference yourself.
as far as i am aware this is with any opticians.
my sister got hers from a local family run opticians a few months ago and she chose playboy ones. they were £70 but because she was a student and didnt work she only had to pay £40.
whereas me and my oh went about 6 months ago and both needed glasses but we just chose the cheap ones so got them for free
hope that helps x