Are you looking for a childminder or nanny? Childminders work in their own homes whereas nannies come to your home,
Local Authorities have lists of registered childminders who are ofsted inspected. Be careful about checking out paperwork as there are some illegal, unregistered childminders out there who will be insured and will not have been background checked.
If you are looking for a nanny then there are agencies or you can advertised. With a nanny you are responsible for doing their tax and NI (there are nanny payroll companies that will do this) also if your dd wants to use childcare vouchers she will need an ofsted registered nanny.