Curiously, there are a lot of fines if you have a card and fail to change information (names when married, etc), but at the same time:
There will be no penalties, civil or criminal, for not applying for an ID card.
Is that a long term plan? Are they no longer mandatory?
Also, we should note the prison terms for accessing or disclosing information on the database:
Anyone found guilty of unauthorised disclosure of information on the national identity register or an ID card application, would face up to two years in prison, while anyone found guilty of hacking into the ID database could be jailed for up to 10 years.
Not too bad then. Given that British identities are worth about £80 (hey, that's less than a Nintendo DS), crims can do a fairly simple cost-benefit analysis depending on the current state of the economy to work out if it's worth it or not.