He was allegedly driving at 90mph in a 60mph zone along the A5 near Chirk in north Wales. He will appear before Wrexham magistrates on 21 November.

Mr Hughes, who was appointed as South Yorkshire's chief constable three years ago, courted controversy after taking charge of road policing at the Association of Chief Police Officers (ACPO).

In June he argued that "less conspicuous" speed cameras should be considered by police as a way of slowing down drivers.

A spokeswoman for South Yorkshire Police said: "Chief Constable Meredydd Hughes has received a notice of prosecution in respect of an alleged driving offence in North Wales in the early morning of a bank holiday Monday in May while on holiday.

"No summons has yet been received."

North Wales Police has not given any indication whether Mr Hughes intends to fight the prosecution, as it would not confirm any details on the case before it went to court.

If Mr Hughes is convicted, he could face a fine of up to £1,000 and even a possible driving ban.


Speeding loophole myths

Jeanette Miller, a leading expert in motoring law and author of Lawpack's Fight a Motoring Ticket, separates fact from fiction:

• "I can drive fast enough to beat a speed camera."
  
  You would need to be driving at 171 mph or above for you to get through a 'Gatso' speed camera without it recording you on film.
  
  
• "The ticket isn't valid because the traffic officer wasn't in plain view and he wasn't wearing a high visibility jacket."
  
  The guidelines state that the traffic officer (police officer, traffic warden, safety camera officer or community support officer) should be in plain view, but if he isn't, this still doesn't invalidate the ticket.
  
  
• "There were no camera warning signs so the ticket cannot be valid."
  
  Speed checks can be carried out even when there are no warning signs.
  
  
• "The back of the camera wasn't painted yellow."
  
  The back of Gatso cameras don't have to be painted yellow for the ticket to be valid. This is only needed if all the proceeds from tickets from that camera are to be used just for the building of more cameras.
  
  
• "The police officer wasn't wearing his hat/jacket when he booked me for a traffic offence."
  
  A police officer only has to be recognisable as a police officer.
  
  
• "I can't get points for speeding because I was in a hire car/company car."
  
  The lease company must still identify you as the driver.
  
  
• "Speed cameras can't take photos of special reflective coating/honeycomb number plates."
  
  These plates could only possibly work on cameras with a flash (e.g. Gatso) and many have been shown not to work even with cameras that do. Honeycomb number plates are illegal and you can be fined for using them.
  
  
• "Speed cameras can only catch cars in the inside lane."
  
  Speed cameras take shots across all of the lanes.
  
  
• "My speedometer/cruise control wasn't working, so it wasn't my fault."
  
  The court will still say that it's your fault and that you're guilty.
  
  
• "I was over the limit, but not to the extent that the police say."
  
  If you admit in court to any amount of speed, even 1mph over the limit, you're guilty of the offence.
  
  
• "Red cars are more likely to receive a fine or prosecution than others because officers play 'speed snooker'."
  
  Officers target vehicles that appear to be travelling over the speed limit. Statistically, black and silver cars are most likely to be caught speeding (because they are the most common).
  
  
• "I don't have to provide the driver's details because I've not been cautioned."
  
  The police don't have to caution you in these circumstances.
  
  
• "The officer refused to show me the reading on the laser/radar gun. There's no proof of me speeding so I can't be convicted."
  
  By law, the officer doesn't have to show you the reading on the laser/radar.
  
  
• "The officer didn't make me sign the ticket at the roadside. If I don't show up at court, the ticket will be dismissed."
  
  Officers don't have to give you a ticket at the roadside at all. If you don't appear at court, you will still be found guilty in your absence and your driver's licence can be suspended until you produce it to be endorsed. If you were then caught driving, you would be 'driving otherwise than in accordance with a valid licence', which carries points or a discretionary disqualification and a fine.

More information

Been caught speeding? Find out how speeding celebrities use legal loopholes to esacpe a ban.

Read insider tips from a motoring law expert, who shows you step-by-step how you can fight your speeding fine and parking ticket...and WIN...here.

60% of drivers who appeal against their parking ticket win! Read our tips on how you can fight your parking fine here.

Do you know that if you park too far away from the kerb, you can get a parking fine? Find out the new rules here.