Details of members of the SAS are among more than 100 Britons named in the database of 18,700 Afghans, the accidental leak of which by a defence official led to thousands being secretly relocated to the UK.
Defence sources said the highly sensitive document contained names and email addresses belonging to people sponsoring or linked to some individual cases. Personal information about MI6 officers was also included.
The identities of members of the SAS and MI6 are a closely guarded secret, and the possibility that following the leak such information could have ended up in the public domain was a source of significant official concern.
Earlier this week it emerged that the Ministry of Defence had obtained a superinjunction preventing the fact of the leak and a £2bn-plus scheme had been created to relocate some Afghans affected by the breach to the UK to protect them from the Taliban.