The photo page only contains information that's quite readily available anyway so I wouldn't be worried. i would be irritated, as there's no legal obligation to have a passport or indeed any other form of ID - if this is some kind of legal requirement, it isn't very well thought through.
In many countries a copy of your ID is required for any vaguely offical transaction, right down to buying a mobile phone/applying for a credit card. I wouldn't like to see that happen in the UK.
ETA - I don't understand how a birth certificate would work as a form of ID since it doesn't have a photo on it - odd.