Yes, I quoted the document above - as I said although it mostly pertains to road hauliers the paragraph on driving licences seems (to me, at least) to have more general applicability, I think that the writer of the Guardian piece read it that way as well…
We were already signatories to the 1949 convention - the article suggests we have somewhat hastily signed up to the 1968 convention as well.
I think the Guardian article is a bit strong in its opening sentence - I can’t see that we would need new licences in the UK, but we could be lumbered with needing to get IDPs (which are not licences in their own right as they need the original to be carried as well).
I can’t see that the average driver will be prevented from driving in the EU but I think that having to get an IDP every 12 months (they are only valid for a year), and possibly an insurance “green card” safely qualifies as increased red tape.
The potential problems for commercial drivers, of course, are significantly larger.