AMC88 there is a very big difference between registering with Ofsted as a Nanny and as a Childminder!
A Nanny can register without inspection. Ofsted do not inspect the home of her/his employer nor do they inspect the person, the registration is purely a function to allow the parents to access Childcare Vouchers or Tax Credits. It is good that at least it forces the Nanny to complete a First Aid Course, be DBS checked and hold Insurance but that is about it. It takes weeks to Register and it costs about £110 which the Employer should pay.
Before you can Register as a Childminder you have to have a Health Check which can cost anything up to £100, a DBS £55 plus one on every member of your household over 16yrs at £55 each, Pead First Aid cost £50 to £120, Child Protection Training approx £40, CYPOP 5 cost approx £1000.
When you have all the above, which can take 6-9mths minimum you have a pre inspection by Ofsted and at that time if they are happy with your home, that you are fully familiar with the Early Years Foundation Stage (EYFS) which we all have to follow and impliment, that you have PLI insurance, House and Contents Insurance and the correct Car Insurance, that you have all the correct paperwor with reagrd to recording every child's details, permission and consent forms and the Statutory Polices in place. There can be a wait of several weeks for the Pre Inspection to happen and then you have to wait for the result and for your Certificate to be sent before you can start work.
The whole process to Register as a Childminder can take a Year or more and costs several Hundreds of Pounds.
There is no way Registering as a Nanny or a Childminder are similar.
Personally I think if a Nanny/Parent wants Ofsted Registration they should have to do more or at least pay the more realistic cost of an Ofsted Inspection which is approx £900.