Bottom line fellas is this ...
If the exhaust was illegal - you'd have been reported.
If you break the law - you will get stuck on. What some guys do is where they aren't sure they will warn.
Cops won't carry round legislation books to show you that under section 1 of the registration plate act - made that up by the way - your digits are 1 cm too close. What they will do is tell you that it's illegal and you then make your checks and decide whether you want to argue the point at court or not.
"Exhausts a bit loud mate - might be illegal" is a fair comment, but unless they are positive, you won't be reported for summons.
If you have a big bore exhaust bought from long life, powerflow, janspeed etc, which is for road use, you will be fine. If you knocked up a bit of metal tube and attached it to your manifold - you may well - and I'd say should - find yourself at court defending your position.
And beware the guy out alone in a panda. He might not be a traffic cop yet, but he may want to be, and by doing so may well know more than a traffic cop who's been doing it for 10 yrs. In many professions, the apprentice knows more about the theory than the experienced old hand ...
