It's because they list out "Contact HMRC and register for PAYE" as taking 8 days, and they seem to think you can't actually trade before that's done. Which is i

It's because they list out "Contact HMRC and register for PAYE" as taking 8 days, and they seem to think you can't actually trade before that's done. Which is idiotic. So the study is pretty inaccurate.