Well i thought it went up when you was 21, I was wrong, Cheers for the info pompy
"What are the current rates of the national minimum wage?
There are three levels of minimum wage, and the rates from 1st October 2007 are:
* £5.52 per hour for workers aged 22 years and older
* A development rate of £4.60 per hour for workers aged 18-21 inclusive
* £3.40 per hour for all workers under the age of 18, who are no longer of compulsory school age."