Mr. Pickles Share this specific contribution Share a link to this specific contribution: Share contribution 1 on Twitter Share contribution 1 on Facebook Share contribution 1 via Email Copy link to contribution 1 to clipboard Copy link To ask the Secretary of State for Business, Enterprise and Regulatory Reform on what date British Standard BS7666, on unique identifiers for each land and property unit, was first established. (158122) Ian Pearson Share this specific contribution Share a link to this specific contribution: Share contribution 2 on Twitter Share contribution 2 on Facebook Share contribution 2 via Email Copy link to contribution 2 to clipboard Copy link I have been asked to reply.The standard was first published in 1994. Its latest revision was published on 28 July 2006.