[user104658]

I have no problem with this so long as these young people are paid for any hours they're doing. Having a slightly lower wage for under 21's is fine, so long as we're still talking at least £4.50 - £5 an hour and not something ridiculous like the situations where some people are doing voluntary work for the equivalent of less than £2 an hour. That's never acceptable and, of course, if it really is about teaching people about the real world of work... In the real world, people get paid for their work.