Vote Green Get Illegals.
In order to deport all illegal migrants in Britain, a Reform government will build detention capacity for at least 24,000 illegal migrants at a time.
They will not be able to leave the detention centres, and be held for a short period while they await deportation.
We understand people feel strongly about living near detention sites. So we make this guarantee:
Based on results from local elections and the next general election, no detention centre will be placed in any constituency with a Reform MP, or in any council area controlled by Reform.
Of the remaining areas, given the Green Party advocate for open borders, we will prioritise Green-held constituencies and Green-run councils to put these sites.
Enter your postcode to see what polls look like in your area:
Your area will be prioritised to receive a detention centre under this policy. Stand with Reform to change that.
Your area is projected to be a Reform-held constituency or council after the next elections. If this is the result, we guarantee your area will not have an illegal migrant detention centre.
Your area isn't currently flagged in either list. Stand with Reform to keep it that way.
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Based on latest polls:
Methodology
Summary
The microsite shows a hybrid map shaded by political projection, plus a postcode lookup that returns yes/no on whether your area could be prioritised to receive a detention centre. Two geographies are layered: Westminster constituencies and local councils.
Data sources
- 1.More in Common MRP, Westminster constituency projections. Fieldwork 1–30 March 2026, n=15,482 GB adults.
- 2.JL Partners MRP for The Telegraph, council-level vote share. Fieldwork 31 March – 13 April 2026.
- 4.Public record, currently controlled/led councils (status as of May 2026).
Reform areas
- Westminster, forecast: Reform projected to win (1st place) in More in Common MRP
- Councils, forecast: Reform leading by ≥10pp margin in JL Partners MRP
- Councils, already held
Green areas
- Westminster, forecast: Green projected to win (1st place) in More in Common MRP (internally adjusted for forecasted Reform wins)
- Councils, forecast (JL Partners MRP) and already held (internally adjusted for forecasted Reform wins)
This policy will be implemented by our Mass Deportation (Detention) Act
Read the Bill (PDF)