Campaigners met with ministers in December and are due to meet with victims minister, Alex Davies-Jones, on Wednesday.
Following the death of the group’s technical expert David Hill, who created detailed analysis of the aircraft and its systems, and now John Dockerty, campaigners have said their deaths underline the urgency of resolving the case and getting “truth, transparency and justice”.
A spokesman for the Ministry of Defence said: “The Mull of Kintyre crash was a tragic accident and our thoughts and sympathies remain with the families, friends and colleagues of all those who died.
“We understand that the lack of certainty about the cause of the crash has added to the distress of the families.
“The accident has already been the subject of six inquiries and investigations, including an independent judge-led review.”
