I have a small business and can now afford to pay someone to work every Monday for 10 hours on a permanent basis. However, I would also like to take off Bank Holidays, a Saturday here and there and a week off now and again. How do I manage this contractually and know how much holiday would be given? I would really appreciate your advice.
You could draw up a flexible hours contract that will accommodate your ability to flex the hours up (and down).
Holiday would be calculated pro rata on the statutory allocation of 28 days including bank holidays – best to convert the 28 days per year to hours which makes the calculation much easier with employees who work part time.
You could keep records of hours worked on a spreadsheet so you can calculate holiday pay.  This could then be paid monthly or quarterly depending on how frequently the employee does extra hours.