Speeding

fixed penalty notice for speeding 30 mph zone 130 code violation last alphabet wrong registration number is valid?

I assume you mean last letter of the registration number is wrong. I'm afraid it's a myth that makes the fine is not valid, because you must have the number correct fine to get home anyway or if given to the road would have to sign the document.

Two Police Officers Are Removed From Duty After Smashing A Driver’s Car Window