I filled out the form I got on the uk Government website but also the one on the Spanish website. At Stansted they asked if I had the UK one, in Spain they asked me for the Spanish one!
There is a Black & White form to fill in all your data which airlines are currently sending to their passengers, or go on www.gov.uk, and which you can print out and take them with you. Remember one form for each person. At Alicante there were people ranting about filling in more than one for a family. Maybe if there are children under 18 it can all be on one form, but I don’t think so.
The other more colourful one can be found on www.spth.gob.es. Fill this is and you will obtain a QR code which will be scanned at the airport on arrival.
I wasn’t getting very far with this one until someone mentioned that they couldn’t go further than the request as they had an iPhone! I wasn’t trying with an iPhone but with an iPad. As soon as I switched to a tablet, I completed the request and received their reply with the QR Code. So maybe it was true, maybe I’m just no good at these more technical things, or just plain silly but I got there eventually. 😃
Hope this is all clear. Good luck.
Janice xx