Military Helicopters: Blood Cancers

Ayoub Khan Excerpts

Tuesday 8th July 2025 Westminster Hall

[Jayne Kirkham]

I thank the hon. Member. He is correct that some cancers can take a long time to manifest. Personnel, veterans and those around them in their communities have to be aware that this could show itself much later in their lives.

Solicitors for some of the personnel point to an RAF Institute of Health report dated March 1999. Although it did not establish a causal link, it contained recommendations to reduce crews’ exposure to exhaust fumes. I understand that modifications to the aircraft to do that were not made, although they did take place on some other countries’ military helicopters.

Six cases in this country, including Zach’s, have so far been settled, and compensation paid by the Ministry of Defence without admission of liability. The Sea Kings were taken out of UK military service in 2018, and the Westland Wessex in 2003. Pumas and Chinooks are still in service, although the older aircraft have recently been retired. Sea Kings, however, are still in service in the private sector, and in military use in other countries. Three were donated by the UK to Ukraine in 2023. The MOD started testing exhaust emissions from military aircraft this February and has started the process of checking the records of personnel and veterans, to assemble data about how many have subsequently developed cancer. That will provide crucial data about who and how many people may have been affected.

[Ayoub Khan (Birmingham Perry Barr) (Ind)]

I thank the hon. Member for bringing this important matter to the attention of parliamentarians. It is not just about those who have contracted cancer. We know that other respiratory problems may also occur. Does he agree that our veterans, who do so much for our country, need the benefit of additional research to ensure all aspects are covered, not just those who have suffered cancer? I pay tribute to her late husband for his effort and involvement in the military.

[Jayne Kirkham]

I agree with the hon. Member that all manner of injuries may have occurred due to people’s military service. It is important that every single one is investigated to check if there is a link. I thank him for reminding me of that.

Due to the sheer number of records and the way they are stored, I understand that checking them could take weeks, if not months. There are a number of things that could be done by Government or further afield that could help people who are affected now or in future. First, the Government could help to spread awareness of this potential link. There will be men and women with initial symptoms of these cancers that can easily be missed. If the serving personnel and veteran communities, who served with or on these aircraft, are alive to the possible risks, they will know what symptoms to look out for and to raise with medics.

Secondly, GPS should be educated in places where there are clusters of personnel and veterans who have worked with these aircraft, so that they know to look for a military record when assessing symptoms that could indicate blood cancers. Thirdly, as well as signposting for veterans, a screening scheme for blood cancers could be set up for those who may be most at risk.

Fourthly, the MOD can move faster on assembling, analysing and releasing the data on how many service personnel and veterans have subsequently developed these cancers, so that more research can be done on causation, action can be taken and cases can be quickly concluded. The five-year survival rate for multiple myeloma is 50%, so people are dying before their cases are settled and many are still being turned down for compensation.

Fifthly, testing exposure to emissions must be done to take into account and replicate the real-life conditions that personnel were working under while undertaking search and rescue and military combat sorties. Sixthly, crews should still be advised to take sufficient precautions around aircraft, such as not standing directly in exhaust fumes and wearing personal protective equipment. Private companies and other countries that still use these aircraft need to be informed of the potential risks so that they can take steps to modify the aircraft and take other preventive action.

--- Later in debate ---

[Al Carns]

I thank the hon. Member for his intervention. Various programmes reach out to those serving, and those who are ex-serving, to highlight the risks of serving in defence. The lack of evidence linking the two together withholds us from being very specific but, generally, we push really hard for everyone in defence with any indication of an issue caused by service to get it seen to, and make sure that a claim goes forward.

The testing programme that we are putting in place is a proactive measure, reflecting our commitment to the highest standards of health and safety. It involves rigorous analysis of emissions from all operational helicopters, conducted in accordance with approved methodologies, ensuring that we have a clear understanding of any potential risks. We will not hesitate—and I will review this regularly—to take swift action if required, once that data is compiled.

This is about more than compliance: it is about meeting existing safety standards, and about trust. It is about demonstrating to our personnel that their safety is our unwavering priority. As part of that commitment, the independent medical expert group, as mentioned by my hon. Friend the Member for Truro and Falmouth, was asked to review not just the UK but worldwide medical literature on this issue. It concluded that there was no evidence of a medical, causal link between helicopter exhaust fumes and rare blood cancers.

But, as I have mentioned to my hon. Friend, although that provides an element of reassurance, we remain vigilant and committed to monitoring any emerging evidence. That is critical. With the Department, I have been exploring options for a broader holistic review of cancer diagnosis in service personnel, which should give us an iron-clad view of certain groups across defence. Throughout that process, we will keep personnel, their families and this House informed, but that is quite a comprehensive study.

[Ayoub Khan]

As a lawyer, I know there are always complexities around causal links, statistics and experts. There will always be a differing opinion. Does the Minister agree that anyone who has been part of the military should have available to them a legal team, funded by legal aid, to progress a claim—as opposed to a lawyer in a no win, no fee arrangement, which can bite into a substantial chunk of any compensation?

[Al Carns]

I will need to come back to the hon. Member on the specific legalities around that issue; I am not a lawyer. The war pension scheme and armed forces compensation scheme for individuals provide a route for compensation, in any way, shape or form. If there is a cause, as far as I am concerned there will absolutely be a redress or compensation scheme to support that, but I will write to the hon. Member on that issue. I want to be really clear on that last point. Although the IMEG’s findings provide some reassurance, I want to be absolutely clear that I have been exploring options for a broader, holistic review of the cancers. We talk about the simplicity of finding the data, but I want to give hon. Members the scale.

There are 2.1 million veterans in the UK. We do not track cancers post-service for those veterans. In some cases, we do not even know where those veterans are. We do not know where the pockets sit. We can have a rough view, and make a guess, but we do not have the statistical data. The Valour programme, which we launched a while back, should help build up a clear understanding of our veteran demographic and the issues that veterans face, and help address them in the most programmatic way.

At the moment, the data does not exist. We will continue to work with independent experts in both the UK and, importantly, the US, to closely monitor and understand any emerging evidence around aircraft exhaust fumes and cancers. Let me reiterate: we will continue to monitor the data. We will monitor this issue closely and act decisively if concerns are identified.