The National Minimum Wage rate will increase on 1 October 2009. The rates from 1 October 2009 will be:

£5.80 an hour for adults (workers aged 22 and over) – the current rate is £5.73
£4.83 an hour for workers aged 18 to 21 inclusive – the current rate is £4.77
£3.57 an hour for young people – the current rate is £3.53

more info