The Conservative/Liberal Democrat Coalition formed after the 2010 general election announced that the ID card scheme would be scrapped. The Identity Cards Act was repealed by the Identity Documents Act 2010 on 21 January 2011, and the cards were invalidated with no refunds to purchasers. Foreign nationals from outside the European Union, however, continue to require an ID card for use as a biometric residence permit under the provisions of the UK Borders Act 2007 and the Borders, Citizenship and Immigration Act 2009.

Can we conclude that are id cards still valid in the uk?
no