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Social Security Benefits: Polygamy

Asked by Matt VickersConservativeDepartment for Work and PensionsTabled Answered 9 June 2026UIN 4347

The question

To ask the Secretary of State for Work and Pensions, how many claimants in receipt of legacy benefits are currently receiving additional benefit entitlement in respect of more than one spouse.

Answered by Sir Stephen Timms

Polygamous marriages are illegal in the UK. Immigration rules have generally prevented the formation of polygamous households in this country since 1988. Under successive governments access to benefit support for additional spouses is only available where the marriage took place in a country where the practice is legal. The Department does not hold information in respect of Pension Credit. However, the most recent published data (August 2025) from the Housing Benefit Single Housing Extract (SHBE) indicates that there are fewer than ten households where claimants are recorded as being in a polygamous marriage formed in another country. In these exceptional cases, there is no financial benefit as more would be paid in benefits if the additional person claimed as a single person. There are no plans to change the existing benefit rules.

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