IRA victims are to sue the Libyan government and its leader Colonel Gaddafi over claims the country supplied explosives for bomb attacks.
The bomb victims are suing Col Gaddafi
A class action is to be filed in US courts along with lawsuits from American victims of IRA bombings.
The litigants include Colin Parry whose son died in the 1993 Warrington bomb.
Jason McCue of H2O Law said the case would take into account 10 IRA attacks, including the Enniskillen Remembrance Day bombing in 1987, which killed 11.
'Held to account'
The Harrods bomb of 1983 which claimed the lives of six people and the Manchester bomb of 1996, in which no-one died, also form part of the case.
Mr McCue said the lawsuits were based on any attack where Semtex allegedly supplied by Libya was used for a bomb or to boost a fertiliser bomb.
He said UK victims of the IRA were able to take action in a US court if they joined a legal action being brought by US citizens.
Mr Parry, whose son Tim, 12, died in the Warrington attack, said: "It is important the state of Libya is held to account."
He was awarded the OBE in 2004 for his peace campaigning work, which includes setting up the Tim Parry Jonathan Ball Trust and the Peace Centre in Warrington in 2000.
Three-year-old Jonathan Ball was also killed in the same blast as Tim Parry.
No-one at the Libyan Embassy was available for comment.
London-based law firm H2O is also involved in suing the alleged perpetrators of the 1998 Real IRA Omagh bombing.