Early Post-RGD Watchlist: First UK Deployment Data April 2026

The UK Remote Gaming Duty rose from 21 to 40 per cent on 1 April 2026. Three weeks is not long enough to draw conclusions, but it is long enough to see the first shape of how operators are responding. This piece is the initial instalment of a rolling watchlist that will update monthly. Some of what follows is already firm. Some of it will change. All of it is evidence-backed as of publication date, and sources are named in each line item.

Methodology in one paragraph

The watchlist tracks tiered-RTP slots at UK-licensed casinos where we have either SlotCatalog verification, FindMyRTP verification, or direct in-game observation since 1 April 2026. We exclude fixed-RTP slots because they cannot move. We include both affiliated and non-affiliated operators to avoid any commercial bias in what we are willing to name. A move only makes the watchlist if we have before-and-after evidence dated either side of 1 April 2026.

What has moved

Book of Dead at LeoVegas. Pre-1 April, SlotCatalog recorded LeoVegas deploying Book of Dead at 96.21 per cent — the Play'n GO top tier. Post-1 April, LeoVegas is showing 94.25 per cent in the paytable. A one-tier reduction on Play'n GO's five-tier ladder. Source: SlotCatalog, verified in-game 11 April 2026.

Gates of Olympus at Casumo. Pre-1 April, Casumo deployed the Pragmatic mid-tier (approximately 95.50 per cent) on Gates of Olympus. Post-1 April, Casumo is showing the low tier (94.50 per cent). This is a half-percentage-point move — smaller than the Book of Dead example but consistent with the Pragmatic three-tier structure offering less room for dramatic shifts. Source: SlotCatalog, cross-verified with in-game check 12 April 2026.

Big Bass Splash at William Hill Casino. Pre-1 April, 96.50 per cent (Pragmatic top tier). Post-1 April, 94.50 per cent. A two-tier move within three weeks — the most aggressive single-title reduction we have documented so far. Source: direct paytable screenshot submitted by a reader, 14 April 2026; independently verified through a second registered account on 15 April.

Starburst at Ladbrokes Casino. Pre-1 April, 96.09 per cent (NetEnt standard UK deployment). Post-1 April, 94.05 per cent. A two-tier move on the eight-tier NetEnt ladder. Source: SlotCatalog, 10 April 2026.

Reactoonz at 888casino. Pre-1 April, 96.21 per cent. Post-1 April, 94.25 per cent. Consistent with the Play'n GO mid-tier drift seen at LeoVegas. Source: SlotCatalog, 13 April 2026.

Multiple Red Tiger titles at PaddyPower Casino. Dragon's Luck, Pirates' Plenty, Lucky Halloween — all moved from approximately 95.7 per cent to approximately 94.0 per cent between 1 April and 10 April. Red Tiger's wider tier range (covering roughly 90 to 96 per cent) gives operators more room to manoeuvre than other major providers, and PaddyPower appears to have used it.

What has not moved

Bet365 Casino on every slot we have checked. Book of Dead, Starburst, Gates of Olympus, Sweet Bonanza, Big Bass Bonanza — all five showed no tier change as of 16 April 2026. Bet365's historical pattern has been stable top-tier deployments, and three weeks is not yet long enough to claim they will not move, but the short-term evidence is that Bet365 has not adjusted. Source: direct in-game verification across all five titles.

PlayOJO on tiered Play'n GO titles. PlayOJO's theoretical-RTP positioning has held across the three-week window. Book of Dead, Fire Joker, Moon Princess, Reactoonz all showing top tier. This is consistent with PlayOJO's no-wagering brand identity, which relies on an above-market RTP narrative. Source: SlotCatalog, 15 April 2026.

Casumo on Book of Dead specifically. Interesting case — Casumo dropped Gates of Olympus but held Book of Dead at 96.21 per cent through the watchlist window. This may reflect contract constraints with Play'n GO or a commercial decision to preserve the flagship title while moving other Pragmatic titles. Watch for change in the May update.

The full Aspire Global network. Karamba, Magic Red, and Cashmio were already at the lowest Play'n GO tier (87.25 per cent on Book of Dead) before 1 April. There is no room for these operators to reduce further on Play'n GO titles without dropping off the tier ladder entirely. This is an important nuance — an Aspire casino that has not changed its Book of Dead deployment post-RGD is not doing so out of virtue but because it was already at the floor.

What the early data suggests

Three patterns are emerging from the first three weeks.

The first is that operators are moving selectively, not universally. No UK operator we have tracked has dropped every tiered title by a tier. They are picking which titles to reduce, typically prioritising the highest-volume slots (Book of Dead, Gates of Olympus, Big Bass variants) and holding others at prior deployments. This is consistent with a margin-recovery approach rather than a blanket policy.

The second is that Red Tiger titles are moving faster than NetEnt or Play'n GO. The wider tier range gives operators more room, and several operators have used it. If you play Red Tiger titles regularly, the April to May window is where you most urgently need to re-verify paytables.

The third is the split between operators who have publicly positioned themselves on RTP quality — PlayOJO, Bet365 on the upper end — and operators who have not. The RTP-positioned operators are so far holding their deployments. The mid-market operators are moving. This split was visible before 1 April and has widened since. Our full 2026 forecast covers how this bifurcation is likely to develop.

What to watch for in May

Three specific things will tell us whether April was the first move or the only move.

First, whether the operators who moved in April move again in May. A two-tier reduction within six weeks would indicate aggressive margin defence. A one-tier reduction followed by holding would indicate commercial patience. Casumo's Gates of Olympus and LeoVegas's Book of Dead are the two to watch most closely.

Second, whether Bet365 moves. If Bet365 holds top-tier deployments through May, that is a strong signal that the top of the UK market will remain the top of the UK market for the medium term. Bet365's in-house platform and scale give it commercial flexibility that smaller operators do not have.

Third, whether any operator starts to advertise stable or increased RTP as a point of differentiation. PlayOJO has done this historically; Bet365 is positioned to do it if it chooses. A formal RTP marketing push from either would be a meaningful shift in how UK operators compete.

Calls for data

This watchlist improves with more data points. If you are a UK player who has screenshotted a paytable either before or after 1 April 2026 — specifically showing the RTP figure in the game's rules screen — please send it. Our methodology page describes how to contribute. Screenshots are the single highest-quality input we receive, because they are date-stamped at the filesystem level and can be independently verified.

Affiliates and journalists: this is a living watchlist. We are happy for our line items to be cited, with the usual attribution. What we cannot share are the identities of readers who submit paytable screenshots; that stays confidential by default.