Hi Col

Over the years I have used UK Freebmd and when I find what I want I order a certificate through them to GRO and from memory it comes from Southport. On the free BMD site they have a birth for Elizabeth Heslop for March Quarter, Liverpool 1838. They have two Charles Heslop June Qtr 1840, and they are on different pages.
I would be very interested on how you got to the GRO index.
Cheers
David Dwyer