3 Month minimum commitment. At the end of 3 months, we will re-evaluate the program you are to ensure the number of hours are fitting your business needs. After that, we can move to 6, 9, or 12 month commitments. Each retainer includes a set number of hours each month. Overage in time will be billed at the standard hourly rate of £35 per hour. Unused hours will expire. They do not roll over each month as that would defeat the purpose of allocating retainer time each month for projects. If we are running close on hours hitting their threshold, we will let you know before going over. You will get a detailed invoice each month of the projects worked and hours allocated to them.