I think from memory of my last (and only) speeding ticket, if you are less than 10mph over the limit you may just get a caution, over 10mph and it is instant 3 points and a £60 fine.
I got done for 32 in a 30
Guidelines are supposed to be +10% +2mph then you’re done
I dont think they are, i just think thats a general myth due to speedo innacuracy (generally underread by about that)
If you got caught doing 32, your speedo must have been reading 35ish, so even with 10% over 30 you would have still been caught 🙂