When you need a witty answer one never comes. So let's get ready for the inevitable silly questions.
How would you answer the following questions....
Is this your car sir?
"Tell you what, mate, you wouldn't 'ave caught up with me in that [basic Astra Police car you were driving] if it wasn't?...............
Do you know how fast you were going?
"Yes." Is the only answer you should give.
Do not say "NO", this could be seen as admitting to 'driving without due care and attention'/
This is an interesting one because it demonstrates that you were fully aware of your own speed. You've answered the closed question.
Don't state any figures - if the Police want to issue a FPN or report you for speeding it's much harder for them to do so if you don't actually state the speed at which you were travelling. They've only asked because they don't have enough evidence to issue the FPN anyway. So, admit to nothing.