I've been in contact with Whitechapel Bell Foundry and also John Taylor Bell Foundry in an attempt to gather some information for you. These are there responses ..
WHITECHAPEL BELL FOUNDRY
We regret that we have virtually no information here concerning the secular employment of bells and whilst the engraving would suggest that it was of British origin we regret that we have no further information or knowledge to impart.
JOHN TAYLOR BELL FOUNDRY
I have looked at your photo and would comment as follows:
Royal cipher ER
12/52 means December 1952
ER means Elizabeth Regina. She was Queen then but not crowned of course.
S(urrey) County Council perhaps (my comment - Surrey is a county in the South of England)
I’d have thought it was a fire engine bell or the like
These bells were not usually manufactured by bellfounders, more likely by brass founders & I have no suggestions as to manufacturer.
As to value, how long is a piece of string, its worth what anyone will give.
I hope this helps.
Acting Archivist to John Taylor bellfounders.
Hope this information helps.