In message , at 15:20:08 on Sat, 18
Apr 2009, John Rowland
remarked:
Once a police car even pulled up behind me in Greenwich town centre and
put the sirens on (at 3am!) causing me to drive through the red light
out of their way, and then they drove through the lights and put the
sirens off.

Sirens are not enough to allow someone to break the law by running a red
light. You need to be instructed to do so by a policeman in uniform,
which means you need to see that the people giving the instructions are
both police, and in uniform.
--
Roland Perry