Re post #17. Just what we don't need! Imagine a prison-break with a couple of those being flown by some "accomplices" on the outside of HMP Wandsworth or wherever.
I don't expect the prison guards, or for that matter the boys in blue, have anti-aircraft/anti-drone weaponary that could shoot one of those drones down. Imagine the risk of collateral damage when spraying bullets up in the air especially in a built-up area
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MB