“The fourth data protection principle requires that ‘personal data shall be accurate and, where necessary, kept up to date’. It does not, however ‘impose an absolute and unqualified obligation on [data controllers] to ensure the entire accuracy of the data they maintain. Questions of reasonableness arise in the application of the fourth principle, as paragraph 7 of Part II of Schedule I spells out.’ This statement by Davis LJ (at para. 80) encapsulates the case of Smeaton v Equifax plc [2013] EWCA Civ 108, in which the Court of Appeal handed down judgment today.”
Panopticon, 20th February 2013
Source: www.panopticonblog.com