Re: Why do the words...
"Although a positive identification is not enough evidence to result in a conviction"
Although it is enough to disrupt ones day completely leading to several hours in a police cell, missed appointments, the possibility of a loss of income or missing last orders at the local.
It also gives the police time to do some fishing. And they can always get the people that respond angrily on section 5 of the public order act to boost some league table statistic.
Cynical, me?