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Britain's Lost Month

UK monthly GDP growth, year-over-year, month by month, 1998 to today

Unit
Monthly GDP growth (YoY %)
Frequency
Monthly
Coverage
1998–2026
Evidence Quality
High

UK monthly GDP growth as a horizon strip — two steady decades torn by the −24.3% pandemic collapse of April 2020 and its +30.0% base-effect rebound a year later.

UK Office for National Statistics · Monthly GDP · ECY2

UK monthly GDP, % year over year · green folds up for growth, grey for contraction

A horizon strip, not a line: growth is cut into magnitude bands folded onto one shallow strip, so deeper colour means a bigger move and hue carries the sign — green for growth, grey for contraction. The baseline is 0%. The deep grey gash of 2020 is the pandemic collapse; the deep-green band a year later is the mechanical rebound off that floor.

01

Question

What does an economy look like when a single month erases years of output — and then hands most of it back?

02

Evidence

The strip is UK monthly GDP growth, year over year, since 1998. For two decades it holds a shallow green band around 2–3% growth, broken grey in 2008–09 by the financial crisis. Then 2020 is unlike anything else on the strip: a −24.3% collapse in April as the economy shut down — the deepest grey band by far — followed twelve months later by a +30.0% green crest in April 2021 as activity restarted against that crushed base. By May 2026 growth is back to a shallow +1.3%.

03

Observation

Read the band depth and colour; further from the baseline reads darker.

Depth is magnitude, hue is sign: grey is contraction, green is growth. The 2020–21 swing is a base effect as much as a recovery — the huge +30% of 2021 is measured against the −24% floor of 2020, not a booming economy.

04

Assessment

  • The pandemic is the singular event on the strip: a −24.3% year-over-year fall in April 2020, several times deeper than the 2008–09 grey band beside it.
  • The rebound is mechanical, not miraculous: +30.0% in April 2021 is growth measured off the collapsed 2020 base — the arithmetic mirror of the fall, not a return to a higher trend.
  • The 2010s were subdued: growth mostly held a thin 1–2% green band, weaker than the pre-2008 stretch, so the UK entered the pandemic on an already-slow trend.
05

Advantage

  • Did the same shock drive UK and U.S. prices together?The Price Shock, in Bands
  • How did rates respond across the crisis and recovery?The Shape of Money
  • How did public borrowing move over the same span?The Ledger, Unrolled