Booked a Antigen test for 0940 with Unilabs but it’s a drive through so they said just get a Uber and call them with the reg when my I book the taxi. Cost 25 euros but it can take up to 4 hrs for result via email and textYou don't need a PCR to return to the UK, you only need antigen, they are much cheaper than a pcr. If you do the antigen on the Saturday after your Monday flight time that will cover you for the ground entry and return to UK. You then just need day 2 test in UK.