Police hold DNA of 4.5m Britons - adding 1m to database over just 10 monthsBy MATTHEW HICKLEY and KIRSTY WALKER - More by this author » Last updated at 00:55am on 5th November 2007 More than one million people's genetic fingerprints have been added to the police DNA database in only ten months. The "Big Brother" system, already the biggest in the world, now permanently stores the details of more than 4.5million individuals. The rise is the equivalent of 150 new entries every hour. The database now covers one in 13 of the population - around 7.5 per cent....