Anne thank you for responding
The handles are quite small at 9.4cm so are ordinary daily cutlery sized.
There were two other pieces in different colours iirc. I think one was yellow. I can't remember the other colour.
I'd be very grateful if you could pass on the pictures to your contact. It would be nice to know who did make them.
The information I had was that they had actually come from a Webb's employee but I've not been able to make a secure link to Webb's and neither have I found anything from Harrach which would have been my other contender.
Then I saw the Herbatte vases looking for something else and immediately thought of my knife handle as they are so similar in style and execution it seemed to me.
Thank you again for any help.