A photo of a traditional "blue lamp" as located outside most English police stations. This one is outside the Charing Cross Police Station of the Metropolitan Police in London. The building in the background is Agar House, 12 Agar Street, Covent Garden, London WC2N 4HN.
<a href="//commons.wikimedia.org/wiki/User:Canley" title="User:Canley">User:Canley</a>
<span class="int-own-work" lang="en">Own work</span>