Not every speed camera gives an obviously noticeable flash. Some speed cameras use infrared lights to get around the need for a bright flash – although you can often still see a mild flash. Typically, though, average speed cameras use more advanced infrared cameras, so they can work day or night, rain or shine (or snow…) and there won't be a flash in sight at all.
This means that more and more, the first you’ll know about being caught speeding will be a letter arriving at your door. Inside the letter will be a Notice of Intended Prosecution (NIP) and a Section 172 notice.
The letter should arrive within 14 days, and then you’ll need to return the completed Section 172 notice within 28 days.
Then you’ll be sent a Fixed Penalty Notice (FPN).
This is where you can plead guilty or not guilty.
Pleading guilty means you’re accepting the fine and some points being added to your licence.
You might be offered a speed awareness course if this is your first time you’ve been caught speeding, or the last time you went on a speeding course was more than three years ago.
Pleading guilty means you’ll need to go to court. If you plead not guilty and are then found guilty, the fines and points you’ll get will probably be higher.
You can find out on the GOV.UK website.