I have not yet received a copy of my service agreement, despite asking for it multiple times.
I do set my own hours, so long as parcels are delivered by a certain time, I can work as and when it suits me. I use my own car, but they provide my gizmo to scan parcel barcodes and to track me.
I am paid by results, so I am paid per successful delivery.
I will check once I get my service agreement, which will hopefully be very soon.
Thanks for all of your answers. They have been very helpful.