Can you back that up with regard to minimum wage?
It's been brought up before and they haven't been able to back it up, either paid in the past below the current minimum wage, not understanding how minimum wage works, (eg time between getting dropped off and picked up by your lift are not working hours) or just hearsay
As you've brought up statutory paid leave, some info please then let us know
The above are claims of unlawful activity.
If it's happened to you then you can act
Delta force are a big corporate entity, they do what they do well. Each site and each manager varies