Bromley's Coat of Arms was granted 20 April 1965.

It comprises:

Vert, a pierced cinquefoil argent within an orle of (nine) acorns or Crest.  On a wreath of the colours, two swords in saltire gules, ensigned by an escallop or Supporters.  On the dexter side a dragon and on the sinister side a horse, both argent.

The official badge is a sword argent, hilt and pomel or a branch of oak fructed proper, in saltire.

The LB Bromley motto is:

Servire populo - To Serve the People

This coat of arms is used only by the Mayor and by Executive Councillors on official Council business.