English helmet cameras going nationwide

In a blow for privacy advocates in England, the helmet cameras that were previously only being used in only in limited trials are now going nationwide. So all of the Police officers will now be sporting a camera attached to their heads. Again, why is the UK so obsessed with putting cameras on everything and everywhere? I can sort of see the usefulness of this, but it would seem to me that information overload would begin reducing the effectiveness of having cameras everywhere.

Via Engadet: England's helmet camera initiative to go countrywide