Mine expires in 2012.
Also, just got on to what Jay mentioned.
My previous licence, before I moved was valid for 50 years, however, when I moved and changed my licence, it now has a 10 year span
So, if you never move, your licence is valid for 50 year, but move, and you need to renew it every 10 years at a cost....
...another money maker for the government...