823-832 mhz wireless microphone, legal?

Hi a bit of advice please, a friend bought this used shure wireless system online but the seller failed to mention that it is the European version (blx24e instead of blx24uk).

The frequency is 823-832mhz which I am not too sure is legal to use in the UK as there is some conflicting information online.

Any ideas or best to return for a refund.

https://ibb.co/jVGkS8B
Comments
You will have to buy a licence to use the gear in the UK https://www.ofcom.org.uk/spectrum/radio-equipment/apply-for-a-pmse-licence/  Or retune if possible to range 863-865
You will have to buy a licence to use the gear in the UK https://www.ofcom.org.uk/spectrum/radio-equipment/apply-for-a-pmse-licence/  Or retune if possible to range 863-865
Thanks.. Will phone up the shop to see if I can get a refund.