Archie Shine - Robert Heritage confirmation  

I'm trying to confirm the manufacturer and designer of a set of dinning chairs together with an extending dining table.
The dining table legs show the same subtle detail as a sideboard i purchased together with the dining suite. The sideboard was manufactured by Archie Shine and designed by Robert Heritage, marketed as the 'Hamilton'.
I was informed by the previous owner that both the dinning suite and 'Hamilton' sideboard were purchased together but i only have the original invoice (1965) for the 'Hamilton' sideboard.
Both the dining suite and 'Hamilton' side board were originally bought from Frederick Restall Ltd Birmingham, although i can only confirm the 'Hamilton' sideboard as being bought from there.

Chair images are on flickr i was unable to past them here.

Many thanks in advance to anyone who can help me with this.
Jim T.