It would appear to me from what I read here that Surrey police recognised that the current standard operating procedure was not working as explained by the earlier posts, and were working on a operation to redress the ballance.
This obviously upset the members of the travelling community who could see their nice little scam being upset like the proverbial apple cart and therefore decided to do something about it.
From my point of view, congratulations to Surrey police for recognising the problem, planning the op and implementing it.
This should however be a wake up call to the powers that be regarding the security of a vital but expensive piece of police equipment.