Richy
Have you done a business plan? if so, what is the botton line?
What I am trying to so is get you figures sorted out before you start to employ, start from the botton line and then add alll the costs of running a business.
Apart from vechicle costs , employing is going to be the biggest expense, do not skimp on this, if ok employing dum dums to dig holes in the ground, but not to let loose with your business, and when they clean your customers windows they are intereacting with them, so if they do a bad job it will relex back onto you, likewise if the are really good at the job this will also reflex on you and your business.
A good member of staff is worth their weight in gold, do not try to save money on wages because a good member will earn you more than you can possible save.
Now back to your original question, apprentiships are a good way of moving forward, if you get the right one, you can mould and build him up to be the best cleaner you need, but remember they are not stupid, and if you take the mick they will pay you back in the future.
I have had gone down this route in the past and he are a few tips.
Make sure they have a driving licence, even though you only have to pay £2.60 per hour for the 1st year, I would not do this, start them off on the £2.60 but increase their hourly rate by 50p every 3 months, doing this the apprentice will become more happy with working for you and at the end of the 12 months you have to pay the minimum wage, so you will have a big hike in you wage bill if you don't.
Also pay out a bonus, say every 3 months.
In april the goverment are bringing out a scheme that if you take someone off the dole, who has been signing on for 6 months, they will give you I think £2750, but this is limited to the first 100000 applicants.
and finally, the figures you are using on what they can earn you a day, imo they are a little high, personally I work on the following figures
Domestic only
1 man with van £200 per day
2 men with 1 van £300 per day
with commercial, you should command more, now you might find these figures too low but if you employed a full time cleaner and paid him £10 per hour with bonuses, your gross profit on £1000 per week would work out at around £380, but this depends on your spending habits ie advertising,equipment etc