James,
Don't get me thinking about it or I'll get all giddy again !
hmmmm agency pays employee £ 9.00 per hour for office job. Agency charges employer £ 15.00 per hour AND this is the market rate is often higher than this !!!
Based on a 37.5 hr week the agency makes a profit of £ 225 per week just for one person on their books. Thinking conservatively, try and place another 4 candidates in jobs at the same rates and that's £ 1125 profit per week.
Don't employ any staff-make the phone calls from your bedroom. Buy a nice suit and some business cards for client meetings. Overheads = petrol and phone calls.
I think I need to lie down in a darkened room !