We are flying back to the UK next week and I need to arrange to have a fit to fly test. According to government website they accept a LFT done up to 3 days before the flight. Anyone did that and was allowed to fly with no issues? We are flying with Ryanair. I am asking because LFTs are much cheaper than PCR but other countries only accept LFTs done 48 or even 24h before flying. Thank you.