My initial thought was Crabtree due to the font styling and the fact nothing is capitalised, however it appears MK also do a similar style.
The best bet is to open it up (or have a qualified spark open it up if you don't feel comfortable doing it) and take a look at the modules. They will have branding on them.
Well, sorry, but I looked at your profile and it gives no hint you are a spark.
As I said, my initial thought was Crabtree based on the font styling, but I've not been able to find anything to confirm this. Likewise MK, as they appear to have similar font styling on the engraved switches. Nearly all the others I found have capital letters.
I see it appears it is in a kitchen there must be sockets of the same design if they are the same and MK the sockets have "MK" embossed between the L & N pins.
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