Thank you for your reply.
I inherited them from my late mother so no idea how much she paid for them. I don't remember them from my childhood so I guess they were given to her. Would £30.00 be for each item or the set?
I have seen the link you gave me. The mark is identical to image 1-03 apart from they haven't got the circle around the letters. That must have some bearing on the age I should think?