Earlier quoted context omitted.
They can still be professional, but Tory cuts made there be a lot fewer police (23,500 police cut from 2010-2019: https://www.gmb.org.uk/news/shock-figures-reveal-23500-polic... ) so they don't have the manpower to sit about waiting for speeders. The UK is not alone in using traffic cameras to enforce speed restrictions. There was a funny example in Germany where their automated cameras blur the face of any passenger…
your source...is a union? really? you can look at ONS numbers yourself (and you will see this isn't the case). Scotland has seen a drastic reduction in police numbers (unfortunately for you, not a Tory government :( oh well) despite record government funding levels. Labour's plan appears to be attempting the same trick with consolidation of forces, which should allow massive reductions in numbers. In Scotland, there…
Scotland is smaller than England, so this makes no sense.
Furthermore, anyone who drives regularly in Scotland knows this to be completely false - there are plenty of traffic cops around (sometimes incognito too), and they are sometimes even seen waiting in rural and semi-rural areas.