not just the police
I lived in a house where road name and house number were the same as another house in the same local authority area in a different road with the same name about 2 miles away. The man who lived in the other house also had same name as me (unfortunately for him). He was quite ill by all accounts. We had 3 ambulances on 3 separate occasions turn up to take 'me' to hospital. So the London Ambulance Service clearly had dodgy data and never bothered fixing it. Whether the resulting delays getting him to hospital had anything to do with his death, I will never know. But when he died, the council then cancelled my council tax account, writing to me to tell me that they had done it because, well, I had died apparently. So even name and street address aren't unique, pretty sure he didn't share my date of birth though.