Actually it is. Around 2005 I was stopped by police at 2am in Hackney and told in no uncertain terms that it was illegal for me to be walking with a 2x4 in my hand
Next time bring a bicycle.
That was twenty years ago my dude
It was added as context for why someone might be carrying a wooden plank at 2 in the morning and why police might be concerned. It is my understanding that Hackney has changed dramatically in the intervening years
Yeah, today you would stopped and frisked, detained, photographed, fingerprinted, interrogated, and finally jailed… for speaking out against the asshats who the think this is a good law.