Storing in columns is so odd and inconvenient that honestly I cannot imagine how someone managed to build this.
(Assuming the stories about this are correct, I don’t think there is a definitive statement yet.)
Hire someone that knows what they are doing
How does a non technical person tell someone who knows what they're doing from someone who is good a looking like they know what they're doing?
I'd like to use your answer to justify my purchasing decisions when I need work done on my house/car/genes.
If you don't know how to implement this system, then perhaps you're in the wrong job.
I'm all for using what works in software, but this was obviously not well planned or designed.
A comment elsewhere pointed out that many people repeat the Excel story, but there are no primary sources.
Upd: BBC also updates on this subject[3] now, the facts will come later ("Investigation launched into coronavirus test error").
[1] https://www.telegraph.co.uk/technology/2020/10/05/excel-erro...
[2] https://twitter.com/standupmaths/status/1313055411285774336
Incompetent is too kind a word for it.