The intervals have been derived by HM Revenue and Customs (HMRC) from 100 percent of new claims for Child Benefit from all births occurring in the United Kingdom (only a 5 per sample for estimates up to and including 2006). A zero interval is assumed for births resulting from a multiple maternity.
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Median intervals between first and second births in the United Kingdom (UK) 2005-2019
Data on the median length of time (in months) between the first and second born offspring of a family in the United Kingdom (UK) from 2005 to 2019 shows that throughout this period the average length of time in between births remained fairly stable with the exception of 2005, 2011, 2012 and 2016 whereby the median increased by one month.
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Office for National Statistics (UK). (November 16, 2020). Median length of intervals between first and second born offspring in the United Kingdom (UK) from 2005 to 2019 (in months) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 15, 2026, from /statistics/632811/median-birth-intervals-between-first-and-second-born-uk/
Office for National Statistics (UK). "Median length of intervals between first and second born offspring in the United Kingdom (UK) from 2005 to 2019 (in months)." Chart. November 16, 2020. ÌÇÐÄÆƽâ°æ. Accessed July 15, 2026. /statistics/632811/median-birth-intervals-between-first-and-second-born-uk/
Office for National Statistics (UK). (2020). Median length of intervals between first and second born offspring in the United Kingdom (UK) from 2005 to 2019 (in months). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 15, 2026. /statistics/632811/median-birth-intervals-between-first-and-second-born-uk/
Office for National Statistics (UK). "Median Length of Intervals between First and Second Born Offspring in The United Kingdom (Uk) from 2005 to 2019 (in Months)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 16 Nov 2020, /statistics/632811/median-birth-intervals-between-first-and-second-born-uk/
Office for National Statistics (UK), Median length of intervals between first and second born offspring in the United Kingdom (UK) from 2005 to 2019 (in months) ÌÇÐÄÆƽâ°æ, /statistics/632811/median-birth-intervals-between-first-and-second-born-uk/ (last visited July 15, 2026)
Median length of intervals between first and second born offspring in the United Kingdom (UK) from 2005 to 2019 (in months) [Graph], Office for National Statistics (UK), November 16, 2020. [Online]. Available: /statistics/632811/median-birth-intervals-between-first-and-second-born-uk/
