I was doing the shopping at Tesco in Walkden this morning and they announced that the Opticians were offering free eye tests. I went straight away and was seen there and then. I asked if it was nationwide and they said it was.
They said there is no end date yet, so I would ring up and book an appointment now
Well worth it if you need your eyes checked!
I think it is usually £15
(edit- checked at Bolton and they are offering the same deal)