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Yes bandit screen is In between standard & bulletproof around £1200 . It will stop most things that someone might throw at it.

Maybe a previous firearms car then?

Have you searched the reg on google? There are a few UK Emergency vehicle websites that catalogue some of the fleet.

Let's see some pics? :)

Barn door mechanics - you gotta love it.

Bring on the A-Team lol.

im not sure exactly what you meen but at a guess id say the hose has failed,as the metal master wouldnt usually fail,
if its a flexy hose then it may be perrished,
or if its a rigid hose/pipe then...