In the 1950s, British servicemen, including John Morris, witnessed nuclear bomb tests on Christmas Island in the Pacific.

Now 86, Morris and other surviving veterans claim their health and that of their descendants was severely impacted by radiation exposure during these tests.

The veterans allege the UK government, which conducted the tests in its bid to become a nuclear power, has suppressed information about the true effects of the radiation.

The servicemen have been denied compensation and their medical records show potential irregularities, fueling suspicions of a cover-up.

A documentary, airing Wednesday on BBC Two, highlights the veterans' ongoing struggle for truth and justice.

The film reveals new documents, like the "Gledhill memo," which detail blood tests indicating irregularities among those exposed, suggesting a possible plan to monitor but conceal health impacts.

Despite these findings, British courts have previously dismissed the veterans' claims due to lack of direct proof.

The veterans have renewed their legal battle, seeking a time-limited tribunal rather than prolonged litigation.

They call on UK Opposition Leader Sir Keir Starmer to address their grievances, citing a past Labour Party pledge from 2019 to provide compensation.

The UK Ministry of Defence maintains no direct link exists between the tests and veterans' health issues, despite evidence to the contrary from international studies.

As the veterans age, their need for resolution becomes urgent, driving their appeal to uncover the truth of their exposure and its consequences.