From October 2009 the minimum wage rates will increase from;

£5.73 to £5.80 an hour for workers aged 22 and over
£4.77 to £4.83 an hour for workers aged 18-21
£3.53 to £3.57 an hour for workers aged 16-17

The Government has also indicated that the adult minimum wage rate will be extended to 21 year olds from October 2010.