All looks very good and I think you can be pretty happy with those results.
The thing that strikes me is you seem to be talking of income, especially from the one off jobs etc as £14000 plus, but there is no mention of profit after costs etc. This will of course change the cost per client significantly.
Another thing that would concern me if you are planning on franchising this year is your lack of stats on drop off rates. I know you have made an estimate of around 60 over the year, but this figure is really important. Don't get me wrong, a drop off rate of 60 from 600 plus new customers is astoundingly good i would say. especially if this is not only clients who cancel after their first cleans, but also includes later drop offs.
both the profit after costs and the lifespan of clients gained are critical figures for an investor so it'd be very interesting if you would give some more information on this.