Since receiving an email from OFCOM in the UK, I have reread the essential requirements shown in https://www.legislation.
Although if anyone intends to put a product on the market later, there are some onerous requirements including on record keeping, I can see nothing that prevents beacon operation at 10mW ERP without a licence in the UK as long as the essential requirements in the above document and interface requirement IR 2030 are met. Now, I am no legal expert, but if it is there at all, I can personally see nothing at all that prevents us in the UK using the 8m ISM band without a licence at 10mW ERP for beacons. Clearly with QRPP beacons we have no intention of putting a product on the market later.
My own personal view is I very much doubt OFCOM really cares!!
As always, I stand to be corrected.