My birth surname was 'A'
Changed it via deed poll to 'B'
Got married (no change)
Changed it via deed poll to 'C'
Registered the birth of our baby today and the registrar put C under 'mother's name', A under 'maiden surname' and B under 'surname at marriage if different from maiden surname'. Went on our way with shiny new birth certificate.
We then got a call to say a mistake had been made with my names and they needed to reissue it (waiving the £90 fee because it was their fault).
AIBU to not see what the problem is?