Hi,
I’ve been to Kew and the information you’re looking for isn’t held there. Unfortunately, the BMD indexes we search on Ancestry are all that are available for the public to check.

The original registers, which contain all the details, are held in the local register office where the event took place and copies are held by the GRO in Southport but you can’t go in and search through them yourself.

You might want to check out the GRO website at http://www.gro.gov.uk/gro/content/certificates/

Best wishes
Linda