Davo
There are ways to cuts costs when you employ someone and they are legal, but firstly you need to charge your customers the right amount to cover all of your costs in running your business.
For a example
You need to have a minimum charge , which is realistic for you needs, this should be £5.00 for the fronts and £10.00 front and back, if the job is going to take longer than another house because of access issues or any other thing then you prices needs to go up to cover the extra time involved in the cleaning.
On all 1st cleans you need to charge double the price, this will cover you on the time issue and it also stops the one off clean customers.
When you employ anyone, make sure that you employ them on a part time basis of 16 hours and pay them £6.00 per hour.
With this way you are covered on what you pay out for holiday and sickness pay.
Next you need to also pay them commission for what they clean, this should be around 35% of the total price of the cleaning price.
You can work your figures out on the basis that the cleaner will clean 3 house per hour and he will work 7 hours a day, 4 days a week, this will give you a income of £840.
Your immediate costs are wages £6.00 per hours for 28 hours = £168.00 commission £840 @ 35% = £294.00 + £168.00 = £462.00
You will have to pay national insurance condibutions for him of 12.8% on what he earns over £70.00 (this is not the coreect figure but its close to it), so you will have to pay £462.00 - £70.00 x 12.8% = £50.17
So your gross profit so far is
Income £840.00
Wages £462.00
NI £50.17
Balance £327.83
Out of this figure you have to take out you other expenses, but you should have at least £200.00 before any tax you are liable for.