For little extra context here (for anyone not in the UK), since the OP article was published we had the coronation at the weekend during which many anti-monarchy protestors were arrested - despite prior approval and communication with the Police ahead of the protest. This has been seen as the first major use of these new powers:
> Police accused of ‘alarming’ attack on protest rights after anti-monarchist leader arrested
> Police accused of ‘alarming’ attack on protest rights after anti-monarchist leader arrested
https://www.theguardian.com/uk-news/2023/may/06/head-of-uks-...
Prior to the coronation the Met Police tweeted:
> Our tolerance for any disruption, whether through protest or otherwise, will be low.
> We will deal robustly with anyone intent on undermining this celebration.
https://twitter.com/metpoliceuk/status/1653745710724968448
Again, this has been seen as further moves by the Met to quash the right of protest in the UK.