You're nearly there - just make sure you don't fall foul of the myriad number plate laws.
Here's an overview of the common must-dos:
Your new registration may mean something very personal to you, such as your birthday or wife's name, but the police take a very dim view of number plates where the characters have been moved around to make a spelling more obvious
At best, this will earn you a stern warning and you'll be told to get it changed pronto. At worst, you can end up being fined and having your license endorsed
Using swoopy characters on a number plate to give it what you might think is a bit of style can also land you in hot water. The police can view this as obstructing the law if the number is difficult to read and this can result in a stint before the local beak
The law allows you to display a national flag as part of the number plate design, but other symbols such as football team badges or the car's maker's badge are forbidden
Cars registered before 1 January 1973 can use silver on black or white on black number plates. Cars registered after this date must use black on white plates at the front and black on yellow plates at the rear
Stick on number plates are illegal as the number plate must be flat and easily legible
If you are unsure of which company to use to buy your personalised registration, contact MIRAD, the Institute of Registration Agents and Dealers, who have a list of members that adhere to their code of practice (www.mirad.co.uk).