Britain facing terrorist threat until 2038, former top cop warns By Christopher Hope, Home Affairs Editor Last Updated: 12:38AM BST 01/07/2008 Britain will be vulnerable to terrorist attack for another three decades, a major report will warn today. Tory leader David Cameron will today unveil the study from Lord Stevens of Kirkwelpington which will criticise the Government for a "lack of a clear border security strategy". Lord Stevens, who as Sir John Stevens was the Metropolitan Police Commissioner between 2000 and 2005, is also international Security Advisor to the Prime Minister, Gordon Brown.Lord Stevens: 'lack of a clear border security...