Vintage registration plates

[sidpotters]

Looking to put vinyl plates on the bonnet, as commonly seen on a types, with a vintage silver pressed letters on black on the rear. I understand 
This is illegal (due to age of cover car) but was interested to hear from any others out there who have done this and to see what, if any, 
Issues they have faced. Were you pulled over? warned? Any feedback would be appreciated.

[tojeiro]

If you make the grille out of copper piping and buy some 16mm pipe clips you can make standard clip on plate for use on the road and swap or have stick on plate for shows and events.

You are likely to get a warning first time, risk is if pulled a second time you can lose the plate.

Rules are clear so you take a risk