Details of this new service are available at -
www.gro.gov.uk/gro/content/certificates/most_customers_want_to_know.asp#OnlineIndex14
This is a question and answer explanation of the service and one of the questions is -
Q9. Why is GRO publishing an online index when other organisations have
already done this?
The new index will contain additional data fields to those which are
already available and this will assist family historians to identify the
correct record. In addition, the index is created from the digitised
records and is not a copy of the existing index which is already made
available by third party organisations. We will also be able to update
our online index if errors or omissions have been identified.
You will need to register if you have not used the GRO service previously, but this does not ask for financial details.
The service can be accessed at :-
https://www.gro.gov.uk/gro/content/certificates/Login.asp