This 'trial' is utter nonsense and so beloved our British Civil Service. The rest of the world just accepts progress but not here.
Look at the idiocy in Northern Ireland over ebikes.
I remember when CB radio started. Everywhere else readily embraced the new device, not the UK.
The reason given was that they interfered with emergency service radios. (But only in the UK)
Great moral indignation at their use was voiced by various politicians, obviously hoping to bag some votes.
Eventually, so many British people were using them illegally that they had to legalise them, but saved face by stipulating only FM and not AM.
The real reason, never mentioned publicly, was that the radios supplied to the Emergency services by the Home Office Wireless Department were cheap alternatives to those used elsewhere and could not cope with cross interference.