A PREVIOUSLY unknown group - the Campaign Against Huntingdon Life Sciences - has targeted a national drugs company for its dealings with Huntingdon Life Sciences. GlaxoSmithKline (GSK) is trying to reassure its 167,000 shareholders after they received letters from animal rights campaigners telling them to sell their shares in GSK within two weeks or their personal details would be posted on the internet. GSK described the campaign as "a typical tactic used by extremist groups intended to cause fear and intimidation" and has told its shareholders to pass the letters to police. Huntingdon MP Jonathan Djanogly, the shadow minister for trade and industry, said: "This is the first time that activists have used this technique to terrify innocent investors and to threaten Britain's pharmaceutical industry, and it will not be the last. The Government must learn from experience and address the problem.