So you would give them 50% each? So you make... ...nothing?
Sorry, Squeeky, I don't understand

Perhaps you mean 25% each?
What about the costs of a van, insurance, diesel, etc.
When you worked for Ian, was he paying for all these things?
If we're talking subcontracted, well, that IS a different story.
The 50% (25% each) would defo be justified in that case.