The militants seized the remote compound near the Libyan border, taking a large number of hostages. Britain later said at least three of its citizens had been killed in the crisis, ended when Algerian special forces stormed the In Amenas plant on Saturday.
British Foreign Secretary William Hague on Monday morning attended a meeting of the Cobra emergency committee on the attack and its aftermath. Britain said at least three of its citizens had been killed in the crisis, ended when Algerian special forces stormed the In Amenas plant on Saturday.
Meanwhile in northern England, gas plant worker Tony Grisedale described how he avoided becoming one of the hostages.
"I just went and hid and kept out of the way, basically, and that was it. It worked for me, we're here to tell the tale," Grisedale told ITN.
He said he was on his own for two days after locking himself into an accommodation unit, closing the blinds, switching off the lights and staying quiet.
Asked what he did for the two days in hiding, he laughed and said he slept.
Describing how he got away from the plant, Grisedale said: "The Algerian military were coming round checking for people and I noticed them out of the window, they beckoned me out and walked me out of the camp.
"I just picked up my bag with my passport in and left everything else and we were escorted out by what looked like their special forces.
"They took us on a truck down the road and took us to where the checkpoint was and on from there to the gendarme station in In Amenas town."
Algeria's Interior Ministry had reported on Saturday that 23 hostages and 32 militants were killed during assaults launched by Algerian special forces to end the crisis, with 107 foreign hostages and 685 Algerian hostages freed.
Hundreds of hostages escaped on Thursday when the army launched a rescue operation, but many hostages were killed.