Good idea

Luckily I've never had a mobile phone stolen, but all too many people do. The MEND UK Web site allows you to register your phones unique IMEI number on the national mobile equipment database. Should the police recover it, you've then got a good chance of getting it back.

You never know - your phone might get stolen. I think that registering it is a good thing to do. You'll certainly regret not taking two minutes to do so if the worst does indeed happen!