article_snippet: The former head of MI6 warned last month that there are 'several thousand' individuals of concern in Britain and demanded tougher anti-terror powers to prevent a ‘ghastly 7/7-style attack’.
article_snippet: Sir John Sawers said ‘The threat that we face from terrorists here has gone up over the last three years and there has to be some response to that.
article_snippet: What we don’t want to do is wait for some ghastly 7/7-style terrorist attack here in the UK before political opinion changes.
article_snippet: ’ Sir John, who stepped down from MI6 last November, added: