well - that is what the email I had from Lost Cousins told me, but I can't find it on the GRO site. It is meant to contain mother's maiden name on all births not just from 1911.
Lost Cousins also says:
'The new indexes include births from 1837 to 1915 (ie more than 100 years old), and deaths from 1837 to 1957''
can anyone find the link to the page for me please?