For those that have been abroad, which company did you opt for for the PCR test and how long did it take to receive the results etc? If I'm travelling on the 30th, do I need to have taken the test and sent it off within the 72 hour period? Sorry if this topic has been exhausted but I'm one of those people where things go wrong at every turn so having this spelt out for me would be great 😂 TIA.