UK Online Slots Hit £788M Record GGY While Sessions Get Shorter

The UK Gambling Commission published its Market Overview operator data to December 2025 on 5 February 2026. Online slots hit a third consecutive quarterly record. The numbers tell a story of a market growing in volume while shrinking in session intensity — and a regulator that still does not track the metric that matters most to players.

A Third Consecutive Record Quarter

Online slots generated £788 million in Gross Gambling Yield in October to December 2025, up 10% year on year and 5.5% quarter on quarter. Players made 25.7 billion spins across 201 million sessions. Monthly active slot accounts averaged 4.6 million, up 5% year on year. By any revenue measure, UK online slots are at their commercial peak.

Sessions Are Getting Shorter

But the session data tells a different story. Average session length dropped to 16 minutes, down from 18 minutes a year earlier. Spins per session fell from 139 to 128. GGY per session dropped from £4.13 to £3.91. Sessions lasting more than one hour fell 16% year on year and now represent just 4.4% of all sessions, down from 6.2%. Players are logging in more often but spending less time per visit.

The UKGC notes a methodology caveat: some operators refined their session length calculations during the period, which affects year-on-year comparisons. But the directional trend — more frequent, shorter sessions — is consistent across multiple quarters.

Stake Limits Have Not Dented Aggregate GGY

These records arrived despite two significant regulatory interventions. The £5 per spin stake limit took effect on 9 April 2025. A lower £2 stake limit for players aged 18 to 24 followed on 21 May 2025. Neither has dented aggregate GGY growth, though they may partly explain the session-duration decline.

The RTP Data Gap

The critical gap in UKGC data remains RTP. The Commission publishes GGY, spins, sessions, session duration, and account numbers. It does not publish average deployed RTP across UK operators or any per-operator payback metric. This means the regulator that oversees a £4.2 billion annual online slots market has no published visibility into the single number that determines how much of every pound returns to the player.

The Wider Market Context

Online casino games generated £5.0 billion in the full financial year 2024-25, of which slots accounted for £4.2 billion. The total UK gambling market reached £16.8 billion, up 7.3%. The remote sector — online betting and gaming — continues to drive the growth.

What Comes Next

The next UKGC industry statistics release covering January to March 2026 is provisionally scheduled for September 2026. That quarter will be the last full period under the 21% Remote Gaming Duty rate. The April to June 2026 quarter — the first under 40% RGD — will not appear in UKGC data until late 2026 at the earliest.