Unsure of maker and dates

I have a lovely boxed small EPNS cruet set comprising of, a salt, pepper shaker (both blue glass lined), a lidded mustard pot and two spoons. The three main items are marked “E.P.N.S. A.J.” there is also a capital “A” which appears to have dots running up the outside of the A’s main sides. The two spoons have “Made in England” on them. I have no idea who the maker is nor how old they are. They look pristine inside their box but the box is not.

Any ideas?

(appologies for the lack of a close up photo, the actual marks are very small. I will keep trying to get a good shot of them.
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