for worker aged 21 or over: £12.21 per Hour (National Living Wage rate)
for workers aged 18 to 20 : £10.00 per hour
for workers aged under 18 : £7.55 per hour
for apprentices : £7.55 per hour
For more information about minimum wage rates and an apprentice rate:
https://www.gov.uk/national-minimum-wage-rates
Source of Information: http://www.hmrc.gov.uk/paye/payroll/day-to-day/nmw.htm
http://www.nationalarchives.gov.uk/doc/open-government-licence/