We enquired with Little Ones to help find our part time Nanny and they were really helpful and have a very good payroll department, I'd done a bit of research before hiring my nanny so I knew a little bit about having to pay their taxes etc and knew I didnt want to do it myself. We didnt end up hiring through them but are still using their payroll service and I definitely recommend it. https://www.littleoneslondon.co.uk/payroll Otherwise friends of mine use Parental Choice - https://www.parentalchoice.com