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UK monthly GDP and ONS growth release markets

Unlike the United States, the United Kingdom publishes an estimate of economic growth every month. The Office for National Statistics (ONS) releases monthly GDP figures alongside its quarterly national accounts, and each release can move sterling, gilt yields and expectations for the Bank of England. That higher frequency creates more opportunities for event contracts and more ways to misread them. This SoftCta guide explains the UK GDP release cycle and the definitions that matter for settlement.

Monthly and quarterly estimates

The ONS publishes a monthly GDP estimate around six weeks after the month ends, showing growth for that month and for the latest three months compared with the previous three. Quarterly first estimates follow a similar lag, with a more detailed quarterly national accounts release later. Headlines may quote monthly growth, rolling three-month growth or quarterly growth, so a contract must name which measure counts. Our general GDP print guide covers the U.S. equivalent and the shared concepts.

Release time and time zone

ONS releases are normally published at 7 a.m. UK time, which is before U.S. markets open and during the afternoon in parts of Asia. During British Summer Time that is UTC plus one hour. A contract that checks the figure at a stated time in another time zone needs to account for the shift. The ONS release calendar lists confirmed dates weeks in advance.

Small numbers, big headlines

Monthly UK GDP changes are often within a few tenths of a percent, and a reading of 0.0 percent is common. Contracts asking whether growth will be positive can hinge on rounding: a figure published as 0.0 might reflect a tiny rise or fall. Check whether the rules refer to the published one-decimal figure and whether 0.0 counts as growth, no growth or contraction.

Revisions and recession labels

Monthly and quarterly figures are revised as more survey and tax data arrive. Annual updates can rewrite several years of history, occasionally removing or creating a technical recession after the fact. A contract asking whether the UK enters a technical recession should specify the measure, the quarters and whether initial or revised data count. Our guides to data revisions and recession declarations explain these traps.

Links to policy

Bank of England decisions weigh GDP alongside inflation and labor data. Weak growth can shift rate expectations, but the ONS inflation release often matters more for policy. Our ECB and BoE guide shows how to connect these releases without assuming a direct line from one print to a decision.

A reading habit

Before reading a UK GDP contract, note the measure (monthly, three-month rolling or quarterly), the release date and time, and the treatment of zero and rounding. Look at recent monthly readings and how often they were revised. Special factors such as strikes, extra bank holidays or extreme weather can distort single months. Verify live prices on the venue rather than relying on headlines.

Primary sources SoftCta readers open

• ONS GDP monthly estimate and quarterly national accounts releases
• ONS release calendar
• Bank of England Monetary Policy Reports
• Venue rulebook naming the measure and release

Reading the quote step by step

• Read the full title and rules, including the named settlement source and the time zone.
• Convert the Yes and No prices to implied probabilities and note the gap between them.
• Subtract fees and spread to see the effective price you would actually face.
• Write your own probability range and the evidence behind it, then compare.
• Check related and near-duplicate markets on other venues for consistency.

Closing SoftCta checklist

• Re-read the venue definition in your own words before reacting to a price.
• Convert prices with fee and spread awareness; verify live cents on the operator.
• Prefer primary settlement sources over secondary headlines and social summaries.
• Treat ChanceWire hubs, movers, and tools as orientation — not order entry.
• Confirm age, location, and product eligibility; SoftCta pages will not suggest location spoofing.
• If clarity is incomplete, watching is a complete SoftCta outcome — no pick-selling urgency required.

SoftCta habits

• Write your own probability range before checking the crowd price.
• Prefer dated primary sources over social summaries.
• Compare related markets when a single book looks extreme.
• Size curiosity with fees and depth in mind; substantial risk of loss.