https://www.bailii.org/uk/cases/SIAC/2019/SC_147_2018.html

In the bail application of O3 v SSHD,  the Special Immigration Appeals Commission confirmed that, as with regular immigration detainees, those facing deportation on national security grounds are entitled to a presumption of bail. In deciding whether to grant bail to such detainees, the Commission must balance that presumption with the national security risk assessment by the Security Service and decide if the Commission can impose conditions to address the risk.

For further information as to background and analysis see detailed post by Daniel Grutters here https://www.onepumpcourt.co.uk/news/daniel-grutters-explores-siac-judgment-on-terrorism-suspects-facing-deportation/

Alex Burrett acted for O3 and was led by Hugh Southey KC instructed by Sunita Joshi of JD Spicer Zeb Solicitors