I’ve got a private number plate that I want to put onto my next vehicle that I ordered yesterday.I was told by the dealer that the new vehicle has to have the original number on it and I have to retain my private plate and change it myself.Now when I had the vehicle I’ve got now it never came with a registration number on it.How do I find out what number I have to put on and how do I do this.Also when do I start doing all this as my dealer is about as much use as a chocolate fire guard.