I've travelled abroad 5 or so times during the pandemic and used various test providers. During October I've travelled twice in quick succession and used Randox both times. I was a bit worried because the day 2 test result from the first trip didn't come back in time before I departed on my second trip and I was worried if the result came back whilst I was abroad and was positive I wouldn't know what to do. Anyway as it turned out I never got the test back at all. Have now done another day 2 test following the second October trip and no sign of the result from that either.
Anybody else had problems with randox?