These are fake licences given that they're being used for identidy fraud. For them to be isued by the DVLA supporting documents would have to be sent. A fraudster won't have a fake passport for each identidy as a fake passport is prohibitively expensive (around £5k). A fake GB licence is around £200 where I am in NI and they're used for this exact reason, double benefits (among other things).
For anyone reading this who gets the idea of getting a fake driving licence because they're banned do not do this. A fake driving licence is used for everything else BAR actually driving. The driver number on the licence will ping back as invalid on a police check or as someone completely different.