Steve
BofP sorry, you aren't corect. There is an immediate power to arrest, and it doesn't have a maximum sentence (in fact Murder is a B of P, you are charged with "that you did murder XXXX against the peace").
No you don't have to warn. You may have got the wrong idea, as the CPS really don't like it. which is why the guidelines are now that you should detain until the BofP cannot reoccur then release.
Richard and Munch
Perception is, I agree bang on the nail. But then the press have a great deal of responsibiility, just as the Police stop action type programs. Hillsbrough being a good example. Someone a few posts down has leap on that quoting politians. Never a good idea. The Hillsbrough report however, doesn't exactly say what the press/Politicians said. It makes a couple of things clear, which have been swept under the carpet, simply because they don't make sensational news. 1. It says clearly that accounts were asked for, those are not statements. They were asked for by the Solicitors firm who represented the Police Force. The accounts were reviewed and solicitors asked for changes to be made in some cases. Worthy of note, not that you'd know from the press, is that those reports which criticised the supporters were also changed on instructions of those solicitors.
These were not statements made in accordance with the Criminal Justice acts as it was then, and statements were not presented in the same way at that point. They were simply fact "I went I saw I did". "Not I think I believe and I concluded" which is the way they are made now.
Of course there's a fly in the ointment which is that some of the senior police officers were investigated for criminal offences. Like you and I did at the time, they have the right to defend themselves in some cases by not saying anything.
Now, you can and the press would like to perceive that as a cover up. But perception doesn't make it reality.
Landrup
I've said this numerous times, but I have dealt with photographers, and I have been the photograpoher dealt with by police. Both sides can be wrong, in fact, I'd go so far as to say I've seen far more photographers causing their own problems that provoked or badly dealt with by police.
The difference is though I have been there, seen it and done it, and I very much doubt you have. First hand experience is far better than hearsay, or to go back to the previous point, perception.