They’ve done that in our park too (same council), huge outcry from old and disabled residents.
Also had patrols out this morning harassing families with toddlers for “playing ballgames” (I understand football matches are banned, but how is a two year old chasing a little ball on some grass a problem?). I stopped running to have a drink of water, and was told off for loitering (they knew I was running, they watched me stop and get the water out of my bag). People doing exercise routines and yoga were moved on. Completely outrageous. There is no law that you can only run or walk for exercise, and no minimum speed you have to be moving at. We’re in a deprived part of London, most people will not have gardens or houses large enough to exercise in. The park is massive, and was pretty empty. There were literally ten of them roaming in pairs around looking for people to harass.