Why was the 1931 Census for England and Wales destroyed?
Researcher
Tue Aug 19 2025
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< 5 minutes read
If you’ve been building your family tree using census records, you might have noticed a glaring gap. After the detailed 1921 Census of England and Wales, the next available enumeration jumps forward to 1951 – this is because the 1931 Census was destroyed in a fire.
What happened to the 1931 Census?
On 19 December 1942, in the shadow of the Second World War, disaster struck not from bombs or enemy fire, but from an unexpected spark in a quiet storeroom at the Office of Works in Hayes, Middlesex. There, the 1931 Census schedules for England and Wales lay stacked like the collective memory of a nation - millions of sheets holding the voices, occupations, and family stories of an entire generation.
But flames swept through the paper like an unrelenting tide, turning decades of history to ash. The brave fire crews battled the blaze, but the damage was done. Recorded by every household on 26 April 1931, these schedules had captured a vivid portrait of Britain between the wars. In a single night, that portrait was lost to the smoke.
Did any traces of the records survive?
Tragically, there was no backup copy of the 1931 Census; no summaries survived either. The Scottish census returns were stored separately in Edinburgh, so remained unharmed. Due to Scotland’s 100-year privacy rule, they are due to be released in 2031.
What does it mean for family history?
The loss of the 1931 Census leaves a 30-year gap in census coverage for England and Wales. Due to the pressures of war, the 1941 Census was never taken. A special Register was recorded in 1939, however, to organise identity cards and rationing, and we can use this as a stand-in for those missing two decades of census data.
Between the 1921 Census and the 1939 Register, family historians miss out on a valuable mid-century snapshot of households. The 1931 Census would have shed light on families living through the Great Depression, in a transitional interwar period and on the eve of huge social changes.
Sources you can use instead
While we can’t replace the 1931 Census, there are other resources that can help bridge the gap:
- The 1939 Register. Available to search on websites like Findmypast, this important collection lists names, addresses, dates of birth, occupations, and later notes on marriages or deaths.
- Electoral rolls, which show eligible voters at a given address and can help trace movement over time.
- Historical newspapers. Millions of digitised pages contain everything from local scandals to community photographs, and can offer a detailed glimpse into the lives of your ancestors.
The destruction of the 1931 Census is one of British genealogy’s great losses, but it also reminds us to use a variety of sources to delve deeper into our ancestors’ stories. Even without those missing pages, there are still many ways to uncover who they were and how they lived.
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