This is a very interesting topic and it would be beneficial if someone can sum up on the topic as it appears there seem to be different of opinions.
The Law is Law and what is stated in black and white in the eyes of law is final.
Now some may get away with a fine or warning depending on the issue but at times it depends on both the officer and the individuals approach and most importantly the persons track record. A blonde haired blue eyes with a low cut top may just a slap on the butt oops I mean wrist for such offence.
Not all the authorities are the same in England & Wales.