Posted: Tue Jun 7, 2022 4:56pm
You can drive in Spain on your UK driving licence as a visitor. If it's a hire car that is pretty obvious to any of the authorities. If however, you are driving a Spanish car that is not hired it is probably best to have proof of your non residents status, together with the other driving documents you must carry in Spain. ( There is an ongoing issue if you are resident and have not exchanged your driving licence, that is a topic that is well documented elsewhere and I won't rehash it.)
You do not need an IDP although, some hire car companies are asking for them. Personally, I would find a different company but that is just me!. As far as the Guardia are concerned, they are also wrong ( good luck with arguing your case with the men in green). An IDP is available at the post office in the UK and costs £5.50 (plus what your photos cost).
One little addition to the above is if you're still in possession of the old paper licence, rather than a photocard licence then it is arguable that you do need an IDP
Hope this helps K