Awwwwww, that's a shame. :-( Can't you rather just do some potentially free Specsavers now instead?, or ...
Yes and no appointments available :(
I think the only way to check participating stores is calling to the free line.
Gutted when I found out. Used to go Tesco opticians every two years for a free eye test so I could always have a valid prescription. Staff were nice too.
I've heard of something like that too, to be honest ... That kinda proves to be a slightly pointless exercise then, if you ask me?.