Prime Numbers proved to be our best purchasing decision in 2008. Having an extremely capable, helpful, and friendly on-site book keeper on site has allowed us to offload VAT, book keeping and payroll both efficiently and cost effectively. They’re highly recommended. Thank you very much for all the work over the last 3 years, my accounts are always in order and ready for the end of year work to begin with the accountant. I am able to find information quickly and is in an easy and readable format, especially for a designer! and wouldn't hesitate to recommend you... Prime Numbers completed my self assessment tax return this year promptly and at a reasonable cost. My affairs are not that complicated but my existing accountant was going to increase their fees to me. Prime Numbers not only charged me less than last year's fee but also offered me some insight into how I might reduce my tax liability for this coming year.