I remember that police station very well, if it was bombed they must have managed to keep it going long after the war finished. Try this link for the photograph: http://www.20thcenturyimages.co.uk/trolleyed/4/22/wirral-birkenhead(3).html
It was hit on 29th September 1940. The window in the top left was totally gone. It had been sandbagged almost to the top of the first floor. It was deemed to badly damaged for further use. Don't know when it was pulled down.
Hmmm... ok - but I wasn't born in 1940 and it was our local police station when I was little, my dad used to work part time at the art gallery next door and I went in the police station several times! Never mind, doesn't matter anyway.
I wasn't born in 1940 either. There's a photo of it with bomb damage in Yesterday's Birkenhead by Iam Boumphrey (page 91) and I am not a structural engineer but it doesn't look that badly damaged and seems more like close blast damage rather than something fatal like a directr hit. On the same page is a picture of severe bomb damage to Bernard's Ironmongers which survived. So maybe it was repaired. Maybe someone can clear this up?
Getting there... I emailed the Merseyside Police tonight and got this response:
Thankyou for your email, I can confirm that this police station was still operational throughout the 1940's but unfortunately I am not privvy to any records of when this building was demolished. Your local library is likely to have records of this type. Regards, Merseyside Police