A fourth British victim of the Algerian siege was named today as efforts continued to repatriate their bodies.
The Foreign Office issued a statement from the family of Sebastian John which said he would be eternally missed.
There was no immediate information on where Mr John lived.
Six UK nationals are thought to have died in the terror attack at the In Amenas plant. The other three named so far are 46-year-old security expert Paul Morgan, systems supervisor Garry Barlow, 49, from Liverpool, and 59-year-old planning manager Kenneth Whiteside, from Glenrothes, Fife.
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.