Help with identifying and value please

Hi there, i have five silver, or silver plated large forks.
Can anyone help with identifying the marks and giving me a rough estimate please. Many thanks.

Hopefully the images are clear enough.

Denitely plated. The B is the plating quality indicator but T&S has not been identified. This site illustrates one of T&S’s top quality (A1) marks in its “unidentified” section.

Value is minimal, maybe £3-£5 (GBP) each on a good day if the plating is perfect which it should be as they appear to be unused. A complete set of six would be better.