I'm always amazed at how these people manage to speak out once they have left the job. It is frustrating that it happens so often - not just in the police but in all areas of public life. Perhaps if they were more outspoken while actually in the job, on the front line real improvements could have been made?
Anyway, the problem as I see it is that many of the areas where terrorists come from are closed communities. It is simply inconceivable that significant numbers of extra police would be 'allowed' to patrol predominately muslim areas without hysterical claims of Islamaphobia. They aren't even 'allowed' to take in specialised police dogs...
I mean, to be fair we could try it of course. We could add more and more
and more police to the beat until we couldn't move for them. We would naturally (in the name of political correctness) need to police non-threat predominantly white English areas to the same level as high risk predominantly muslim areas for fear of being called racist or islamaphobics or whatever but perhaps it would help...?
In addition, the terrorists are always 'known to the police' (mainly) through the efforts of the intelligence services. The Big Issue is that there are simply too many of them - the police don't have the specialised resources to monitor 3,000 of the most dangerous 24/7. Adding 10,000 or 20,000 or 100,000 community police wouldn't help that.
And how far would the 'missing' 20,000 plod go by the way...? That would be one extra policeman for every 3,250 low risk British/Sikh/Buddhist/Chinese, etc. and one extra policemen for every 3,250 in the significantly higher risk muslim community - assuming they were 'allowed' entry obviously. I can't see it making a difference to be honest.