And it should be open to public use. Not yet another carrier frequency they will charge us an arm and a leg to use, some of the cell phone connectivity charges are insane, hundreds of dollars for low bandwidth iot sims.
Worse is that the unlicenced spectrum that is available is often so heavily encumbered with restrictions in many parts of the world. Wi-Fi HaLow for example, in ETSI regions, is limited to a paltry 14dBm EIRP in no wider than 2MHz channels and an unacceptably punishing duty cycle restriction in most cases that render it barely able to make a TCP connection (some mitigations exist that involve channel hopping on some products but nothing that works for things that require fixed channels, e.g. IBSS or 802.11s).
It's one of the great things about the UK. As long as you're not causing interference to anyone that's actually paying for a licence, you can pretty much do what you like.
Ofcom have about two dozen engineers for the whole of the UK, none of whom are equipped to deal with it.
In general, though, in the UK if you're not making a nuisance of yourself the laws are pretty optional, and this is a pretty good example of it.
You can also consider trying to get a license. Costs and probability of success vary widely, but you may as well find out what they are before complaining.
Some European hacker events get temporary licenses to run their walkie talkies and even their own 4/5G cellphone networks. I assume they are cheaper and easier to get than permanent licenses.
I suspect with modern modulation schemes you'd be able to squeeze quite a chunk of bandwidth out of that.