Speaking in Sydney Foreign Secretary William Hague has said that the attack in Algeria is "cold blooded murder, there can be no excuse or justification." He added that it is still too early to say who or what was behind attack.
Mr Hague confirmed that the family of dead Briton have been informed and that the Algerian Government are working closely with the UK.
David Cameron warned that north Africa is becoming a "magnet for jihadists" as he announced help to tackle the terror threat in the region.
A British man from Aberdeenshire has spoken to ITV News about his dramatic escape from militants and his concern for some of his colleagues.
Stephen McFaul, one of dozens of hostages taken by Islamist fighters at gas plant in Algeria, is due to arrive back in Belfast later today.