Thought I had everything sorted - travel, tickets and tests, then start reading this thread!!
I have booked the PCR test at Dam Health in Didsbury for Thursday afternoon (travelling out Friday morning), as it said results back by midnight on the day of the test. Now they have changed their homepage to say results within 24 hours - which is obviously worrying, especially with the 'hit and miss' reports on here. I have e-mailed them and they said they have had 1,000s of new appointments this week due to the change in restrictions and they will pass on my flight details to the lab. So not much of a guarantee there!