The Home Office has advertised for a religious adviser, who can help detained migrants get married.
The vacancy is for Campsfield House Immigration Removal Centre, near the village of Kidlington, Oxfordshire, which is set to be reopened after it shut in 2018 due to riots, escapes and poor conditions.
The centre has space for up to 400 people waiting for their immigration status to be resolved.
It is expected to reopen its doors in December.
Some of the religious adviser's "main duties" include counselling residents who request marriage while in custody and making any arrangements for the wedding.
It is part of the "comprehensive programme of religious activities" they must provide for the multiple faiths within the facility.
Detainees inside, including convicted criminals and refused asylum seekers awaiting removal, can under human rights law, marry while in the centres.
This is despite the risk of so-called "sham" ceremonies, which can see detained migrants tie the knot with a British citizen to prevent deportation.
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The Home Office has taken the job advert off its website
| GETTYThe Home Office has taken down the advert, but it is still visible on other sites.
The Home Secretary can order an investigation of couples on these grounds.
Investigators would have to show one or both people were foreign nationals they did not have a "genuine relationship", to prevent marriages proceeding.
They would also require one or both people marrying "for the purpose of circumventing UK immigration controls".
They must also be taken to the ceremony "without disrupting the smooth running of the centre".
Guidance from the Home Office stated: "Getting married or entering a civil partnership to gain an immigration advantage is not a legal impediment and, in any event, only a registrar may prevent a marriage or civil partnership on this ground."
The religious advisor must be able to provide appropriate rooms, literature and artefacts for detainees to observe their faith.
They must communicate with staff and "residents" about any religious festivals being undertaken.
Shabana Mahmood pushed for moving asylum seekers from hotels to military barracks
| PAReacting to the job advertisement, Shadow Home Secretary Chris Philp said: "Labour's latest illegal migrant madness.
"Now they're hiring a religious adviser in a Removals Centre for illegal immigrants & foreign criminals - whose duties include helping them get married, potentially including sham marriages! Labour has lost the plot."
Over 50,000 migrants have come to the UK since Labour took over in July 2024.
A Home Office spokesman has previously said: "We have recently started working with immigration removal centre providers to set out what this Government expects from education and activities across the detention estate.
"At the same time, the scope and responsibilities of all planned recruitment for Immigration Removal Centres continue to be actively reviewed."
New Home Secretary Shabana Mahmood has proposed moving asylum seekers from hotels into military barracks as she pushes for a tough immigration policy.
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