It has been confirmed that the prime minister will meet with the relatives of those killed in the Lockerbie bombings, following his visit to Libya.

Families have raised concerns that the new relationship with Colonol Gaddafi will not be used to find out the truth behind the 1988 attack, which killed 270 people.

A former Libyan security agent, Abdelbaset Ali Mohmed Al Megrahi was jailed for life for conspiracy to murder in 2001, following a trial under Scottish law in the Netherlands.

"We find it difficult to believe that neither the UK government nor the Crown Office has any further questions to ask in Libya that could shed light upon what happened," said a spokeswoman for the British families.

"Megrahi was convicted of 'conspiracy' to murder.  Who are the co-conspirators?  What was the motivation behind the bombing?  Who financed this act of terrorism?  Who was ultimately responsible?  How was it allowed to happen?"

Ahead of his visit to Libya, Tony Blair wrote to the families, insisting that he would seek "justice" for them.

The letter was regarded by UK Families Flight 103 as a "personal promise" and requested a meeting, which Downing Street confirmed on Wednesday would take place.

"While in Libya Tony Blair acknowledged that in developing a new relationship with Libya, 'we do not forget the pain of the past'," added the spokeswoman.

"This now sounds to us like paying no more than lip service to our feelings.

"Only by a thorough examination of what has happened can we all learn lessons from the past."