To be pissed off DH's work asking for my Mat B1?

[QueenArseClangers]

DH is sorting out his paternity leave for this Jan when our baby arrives. His work have asked for MY mat b1 form. In the government/hmrc websites it states that this is not required and only filling in a self-certification form is needed.
What pisses me off is a) the mat b1 form is my personal document b) his work won't have data protection to deal with said document in confidence and c) the info is out there for employers to know that they don't need MY form.
Guess it's also just the principle of the the thing too. Got me in a right hormonal pregnant nark, aibu?

what's the big deal though? it's just a form stating you are pregnant. not really confidential. I would just send a copy and forget it.

I refused to give DPs work a copy of my MATB1. Partly because I I knew they had no right to see it (I work in a related job) and two, because I had already given the original to my HR dept.

I fired off an email to DPs HR with links to the relevant legislation and they have now changed their policy on the evidence required :)