Problem in UK is dealing with trust issues
People dont trust databases
Government databases are already inaccurate, incomplete and inconsistent
There is no effective way of finding out what the government already thinks it has on you
People will not own their data (it will be contracted out for someone (or several someones) profit)
Lack of controls on who can access what (see above)
Correcting data will be an afterthought (refer direct.gov issues too)
Lack of effective back-end data sharing between existing government systems never mind some sort of font end...
Not everyone has capability or the ability to use the internet (refer digital not-spots issues)
Although I really do like the idea I will never be asked for information already provided to the government. I really hate repeating 80% of the same information for each encounter with government services. Can't really see it taking off here.