My Early Police Days - Part 3 in Mervyn Mitton's Blog A blog by Mervyn Mitton Posted June 2, 2013 · Report reply It is my understanding that the Met. Commissioner, the Deputy and the Assistant Commissioners upon appointment loose any "Constable" only powers including those relating to arrest. This was certainly the case during the period when they were ex officio Justices of the Peace, it being incompatible for a Justice of the Peace to also be a Constable. Mervyn's comment "...having come through the ranks they are most certainly Police Officers with a power of arrest", is largely meaningless if on appointment to the ranks mentioned, legislation removes those powers from them. I have always found this forum to be very informative and a very good source of information. That said, I sometimes wonder how accurate that information is. I believe it should be so, otherwise readers will be mislead. I will set myself a task and get to the bottom of this Met. Commissioner business once and for all. There seem to be varying differing opinions in respect of his constitutional position i.e. Is he the UK's most Senior Police Officer, does he hold the "Office of Constable" and another "does he or doesn't he" still carry a silver token! Various individuals (including myself) give their views but those on the sidelines reading these comments will still scratch their heads and ask "Well, that's interesting but who's right?" As a retired Merseyside Police Officer, I'll contact the current Commissioner, Sir Bernard (former Chief Constable of Merseyside) and I'll ask him if he would be kind enough to give me answers to the questions posed. I'll let you know what he says. Mervyn, here in the UK Watch Committees were abolished in 1974 (nearly 40 years ago) when the Hull City, Bradford City, Leeds City and Birmingham City Police forces ceased to exist.