Bad idea.
Seriously.
All complaints have to be investigated. There's a mark against the coppers name.
No matter what you all think, they'll f**k you over in another way. Check the motor etc.
The very worst they could do is list your car on the PNC. Their ANPR's would then beep whenever you drive past and you'll get tugged week in week out. They can do this just because they feel like it and its a long legal process to have it removed
Be polite, unfortunately, explain that the law is 'x'. Laminate two copies, and offer one to the the next rozzer to pull you as a gesture. EXP