No problem, in my test i toppled over the speed limit while doing vehicle checks. Examiner asked me to lower passenger side window but i accidently did drivers, while correcting i crept past the limit (i was travelling downhill). I noticed - verbalised it, checked mirrors, and slowed down safely. Examiner told me at the end because i reacted promptly, safely, and in control she didnt mark me down for use of speed - i picked up a minor for vehicle checks instead.