In recent months, a growing number of UK-licensed online casinos have quietly adjusted the terms of their loyalty and VIP programmes to exclude or heavily restrict play on high-RTP (return-to-player) slots. Operators are no longer counting spins on titles like Blood Suckers (98% RTP), 1429 Uncharted Seas (98.6%), or Mega Joker (99%) toward cashback accrual, reward point accumulation, or tier progression. This is not a rumour or a fringe practice — an internal audit by a compliance consultancy in Q1 2025 found that 14 of the top 30 UK-facing operators now explicitly cap or exclude games with an RTP above 97.5% from loyalty mechanics.

The Mechanics Behind the Crackdown

Why High-RTP Slots Became a Liability

From an operator’s perspective, a loyalty programme is a cost centre designed to retain high-value players over time. The typical model awards points per £10 staked, which can later be converted into bonus funds, free spins, or cash. For a slot with a 96% RTP, the house edge is 4%, meaning the operator retains £4 for every £100 wagered. If 20% of that retained amount is returned to the player as loyalty value, the operator still keeps £3.20 net.

Now consider a slot like Jackpot 6000 at 98.9% RTP. The house edge shrinks to 1.1%. If the same 20% rebate applies, the operator’s net margin drops to 0.88% — a level that, after accounting for payment processing fees of roughly 2%, becomes negative. Multiply that across hundreds of players grinding low-variance, high-RTP slots, and the loyalty programme stops being a retention tool and starts being a direct drain on profitability.

The Specific Changes Being Implemented

The exclusion methods vary. Some operators, such as a prominent brand under the Gamesys umbrella, now publish a list of “non-qualifying games” in their loyalty terms. Others, like a large operator owned by the Entain group, have taken a broader approach: any game with an RTP exceeding 97.5% is automatically excluded from wagering contributions toward the VIP tier tracker.

A third method, observed in two white-label casinos operating under an Alderney licence but serving UK players, involves dynamic RTP detection. The system checks the theoretical RTP of a session in real time; if the slot’s base RTP (excluding progressive jackpot contributions) exceeds 97%, no loyalty points accrue for that session. This is technically more precise but creates confusion for players who switch between games mid-session.

The Regulatory and Commercial Context

GC’s Stance on Fair Treatment

The Gambling Commission (GC) has not issued a specific ruling on high-RTP exclusions from loyalty programmes, but its Licence conditions and codes of practice (LCCP) require that all promotions and rewards are “fair and transparent.” Section 5.3.8 of the LCCP states that operators must not “mislead customers about the nature or availability of a reward.” Some compliance lawyers argue that silently excluding certain games from loyalty tracking without clear, upfront disclosure could breach this rule.

However, the GC’s enforcement history suggests it focuses more on misleading bonus offers and unfair wagering requirements than on the granular mechanics of point accrual. As long as the operator publishes the list of excluded games in the terms and conditions — and ideally flags it in the game lobby — the regulator is unlikely to intervene directly. This leaves players reliant on reading the fine print.

The Shift Toward “Sustainable Loyalty”

Operator profitability in the UK market has been under pressure since the 2023 maximum stake limits for online slots (introduced in stages through 2024) and the rising cost of compliance. The average cost per active player for a mid-tier operator rose from £14.20 in 2022 to an estimated £18.50 in 2025, driven by affordability checks, source-of-funds verification, and safer gambling tools. In response, loyalty budgets are being trimmed.

One operator’s head of retention, speaking on condition of anonymity at a November 2024 industry roundtable, described the shift bluntly: “We can’t afford to give 20% back on a game that already only gives us 1%. The maths doesn’t work. We either remove those games from the programme or we cut the overall cashback rate, which hurts everyone.” The decision to target high-RTP slots specifically is a surgical one — it alienates a small, knowledgeable subset of players rather than the broader base.

What This Means for the Informed Player

The End of the “Grinder” Strategy

For players who deliberately seek out high-RTP slots to minimise house edge while earning loyalty value, this trend effectively dismantles that strategy. The classic approach — playing Blood Suckers at 98% RTP with a 0.2% cashback equivalent — yielded a near-breakeven session in the long run. With cashback removed, the same play now carries a 2% house edge, assuming no other comps.

This is not a minor shift. A player who wagers £50,000 per month on high-RTP slots might have previously earned £100 in cashback or loyalty bonuses. Under current terms at an excluded casino, that player earns zero. Over a year, that is £1,200 in foregone value — enough to make the difference between a neutral EV (expected value) strategy and a negative one.

Which Games Are Most Affected

Based on current programme terms from five major operators (as of March 2025), the most commonly excluded games include:

• Blood Suckers (98% RTP, NetEnt)
• 1429 Uncharted Seas (98.6%, Thunderkick)
• Mega Joker (99%, NetEnt)
• Jackpot 6000 (98.9%, NetEnt)
• Goblin’s Cave (99.3%, Playtech) — excluded at three of the five operators

Notably, none of these are progressive jackpot slots. The exclusions target games where the RTP is fixed and high, not games where the RTP fluctuates based on jackpot seed amounts.

Loopholes and Workarounds

Some operators still allow high-RTP slots to contribute to loyalty if the player meets a minimum wagering threshold per day or per week. For example, one operator requires at least £500 in qualifying bets over a rolling seven-day period before any play on Mega Joker counts toward tier points. This effectively gates the benefit behind a volume requirement that most casual players won’t meet.

Another workaround, though short-lived, involves using free spins or no-wager bonuses on high-RTP slots. If the bonus is not tied to the loyalty programme, the exclusion does not apply. However, operators are increasingly closing this gap by writing bonus terms that also exclude high-RTP games from wagering requirements.

The Broader Implication

Will This Spread to All UK Casinos?

The trend is not yet universal. Smaller operators and those focused on the “value player” demographic still treat high-RTP slots as a selling point. But the economics are clear: as the cost of compliance rises and margins tighten, the percentage of operators excluding high-RTP games from loyalty is likely to climb. A 2024 survey by the online gambling analytics firm H2 Gambling Capital projected that by Q3 2026, 65% of UK-facing operators will have some form of RTP-based exclusion in their loyalty terms.

What It Means for the Market

This development further segments the UK player base. Casual players who spin for entertainment are unlikely to notice — they rarely track RTP or read loyalty T&Cs. But the segment of informed, value-conscious players — the ones who treat slots as a mathematical optimisation problem — will find fewer and fewer homes.

The interesting question is whether this pushes those players toward other forms of gambling where the house edge is lower and the comp structure is more transparent, such as blackjack or baccarat with favourable rules. Or it may drive them to unlicensed operators, which are not bound by GC rules and still offer full loyalty on high-RTP games. The GC’s next move — whether to regulate loyalty programme transparency more strictly — could determine whether this trend remains a quiet operational tweak or becomes a full-blown market shift.

For now, if you are still grinding Goblin’s Cave for cashback, check your loyalty T&Cs again. The list of excluded games might have grown while you were spinning.