HALLMARK ID?

British Silver Reading Silver Hallmarks
1

Hi,
I am trying to find ouy what the following hallmark means- A1 EP then 3 stars in a clover leaf followed by NS then 3 B’s inside overlapping circles
thank-you
john

2

A1 undefined standard to say that it is a good quality, but noone controlles that
EP - Electro plated
3 stars - give association that it is silver (but it is not)
NS - Nickel Silver
3 B’s maker dont know who

3

Thank-you for your help

4

Barker Brothers of Birmingham England.
925-1000.com/silverplate_B.html

5

Brilliant -Thank-you
john