Electoral registration officers already have to undertake a number of checks to confirm that people are eligible to vote, particularly in different sets of elections. My hon. Friend will know that, for example, in order to vote in a general election, a person has to be a citizen of the United Kingdom or a qualifying citizen of the Irish Republic or the Commonwealth. Those checks will remain as they are now. The checking of the date of birth, signature and national insurance number will enable the registration officers to be confident about someone's identity, which will enable those other checks to be more accurate.