Monday, May 18, 1998 Published at 08:58 GMT 09:58 UK
UK Government faces Sierra Leone grilling
Robin Cook: facing MPs for the second time in a week
Click here to follow the debate live in RealVideo from 3.30pm BST (2.30pm GMT) until 7.00pm BST (6.00pm GMT).
The opposition are hoping to increase pressure on the British Government in a House of Commons debate chosen by the Conservatives.
Ex-civil servant tipped to head inquiry
The Times has reported that Mr Cook will pick, a former senior civil servant Sir Thomas Legg QC, who was the Permanent Secretary at the Lord Chancellor's Department until March.
Mr Cook has said the inquiry will be headed by someone from outside the Foreign Office, once the Customs and Excise investigation has finished and cannot be prejudiced.
Customs has passed a report to the Attorney General John Morris who will decide if Sandline will face criminal charges. His decision is expected imminently.
Prosecution expected to be ruled out
Several newspapers have reported that Mr Morris is expected to decide against prosecution.
The sources are also said to believe any chance of a successful prosecution has been seriously damaged following the Prime Minister Tony Blair's attempts to dismiss the matter as overblown.
The Customs investigation began six weeks ago. It followed allegations that Sandline, headed by former Scots Guard, Colonel Tim Spicer, broke the UN embargo by supplying forces fighting to help reinstal President Kabbah.
In the end President Kabbah's civilian government was restored after the intervention of a Nigerian-led force, Ecomog.
Sandline denies sanctions-busting and has said it acted with the approval of the British Government - a claim strenuously denied by ministers.
However, the Shadow Foreign Secretary Michael Howard has demanded a full public inquiry.