Haslar IRC, Gosport (Hampshire)

Haslar IRC occupied the site of a former Royal Navy facility on Haslar Road in Gosport. It operated as a male IRC for several decades and was the subject of repeated HM Inspectorate of Prisons reviews. It was closed in 2015 in line with a wider Home Office plan to reduce the detention estate^[1]GOV.UK.

The Portsmouth News reported in 2025 that the Home Office was actively considering Haslar as part of a basket of legacy detention sites being evaluated for reuse to relieve pressure on the active estate as the asylum hotel programme is wound down^[2]Press. As of April 2026 the site is not in active detention use; refurbishment costs and a final decision are pending.

At an indicative IRC bed-day rate of £350, a 160-bed reuse of Haslar would imply an annual operating run-rate of roughly £20.4 million if fully utilised. The May 2025 NAO accommodation report excluded detention bed-day costs from its £1.296 billion hotel figure, but used similar order-of- magnitude assumptions for IRC modalities^[3]NAO.