How We Rate Non GamStop Casinos
Five tests decide every ranking on this site, and 35 of every 50 sites that enter the audit cycle fail at least one of them. This page is the long-form version of the methodology summarised on our home page. It explains what each test measures, how the timing is captured, what disqualifies an operator, and why the cut list is the most important deliverable any independent affiliate publishes.
If you've found this page from a search engine, the short answer is: every casino ranked on this site was tested by a real person with real money in a fixed audit window. Headline figures (bonus size, slot count, "trust" badges) are weighted secondarily — they're the easiest data points for an operator to misrepresent.
The five tests
Every site that enters the audit goes through the same five stages, in the same order, with the same scoring weights. Sites that fail any one of the five are excluded from the published list — they do not appear in the toplist, the comparison table, or anywhere else. The cut list is held in our research repo and can be requested by any reader.
Stage 1 — End-to-end withdrawal time
Each candidate site receives a £200 Visa-debit deposit. We then play through 24 hours of standard slot and live-dealer sessions designed to leave the balance within £30 of the original deposit, then submit a withdrawal request to a personal Revolut account. The clock starts at request submitted and stops at funds available in destination — not at "approved by casino", which is the metric most affiliate review sites quote and which is meaningless to a player who can't yet spend the money.
Crypto cashouts are timed to confirmed receipt at an external wallet. Bank-wire withdrawals are timed to credit at the destination bank, which often takes 24-72 hours longer than Revolut even at the same operator.
Sites where the £200 cycle did not clear within seven working days fail this stage. Sites that required additional documentation beyond the standard KYC threshold during the cycle fail. Sites that partially clawed back the withdrawal as a "bonus winnings adjustment" fail. In the May 2026 cycle, 12 of 50 candidates failed this stage.
Stage 2 — Deposit ceiling tolerated on a single transaction
The advertised daily deposit limit is tested against a single live transaction at that ceiling. If the deposit is held for review or a manual KYC check is triggered, that fact is recorded against the casino's score regardless of whether the deposit eventually clears. A stated ceiling that the casino in practice will not honour is treated as a stated ceiling, not a tolerated ceiling — only the latter is published in our tables.
This stage exists because UKGC affordability rules effectively cap routine UK deposits at around £2,000/month for most players. Players choosing a non-GamStop site are usually doing so to bypass that constraint; if the offshore site applies its own equivalent constraint at the deposit window, it is not delivering on the implicit promise of being non-GamStop. This stage doesn't disqualify operators outright but does heavily inform ranking position.
Stage 3 — Licence verification on the issuing register
Every footer-claimed licence number is looked up on the issuing regulator's public register. Curaçao licences against gaming-curacao.com, Anjouan against the Comoros gambling authority registry, MGA against the Malta Gaming Authority public register. The check confirms three things: that the licence number returns a live record, that the trading name matches, and that the record has not been revoked or suspended.
Sites whose footer-claimed licence does not return a live record on the issuing register are excluded immediately. In the May 2026 cycle, 5 of 50 candidates failed at this stage. This is the most consistent failure mode in the offshore market — operators hold a real licence under one trading entity and operate the consumer-facing brand under a different name, with the licence number quoted on the consumer brand's site not actually corresponding to that brand's record.
Stage 4 — Customer-support response and resolution
Each casino's live chat receives three test queries during the audit window: a deposit-method question (low-stakes), an account-verification question (medium-stakes), and a withdrawal-related question (high-stakes). First-response time is logged for each. Resolution time, where escalation is required, is logged separately.
Sites that fail to escalate a high-stakes query within five working days are excluded. Sites where live-chat agents repeatedly end sessions without resolution are excluded. In the May 2026 cycle, 8 of 50 candidates failed this stage.
Stage 5 — Bonus-terms consistency
The headline welcome offer is read against the full bonus terms page. We are looking for: a max-bet rule during wagering that is not disclosed on the welcome page, a cash-out cap on bonus winnings that is not disclosed on the welcome page, a game-contribution cap that materially reduces the practical value of the bonus, and any "abuse" clause broad enough to allow the operator to confiscate winnings at its discretion.
Sites where the welcome page and the bonus terms page contradict each other are excluded. This is not a question of whether the terms are favourable — it is a question of whether the marketing matches the contract. In the May 2026 cycle, 10 of 50 candidates failed this stage.
The cut list
Of the 50 sites entered into the May 2026 audit, 35 were cut. The full breakdown by failure mode:
| Failure mode | Sites cut | What it means |
|---|---|---|
| Failed withdrawal test | 12 | Funds did not clear, were partially clawed back, or required documentation beyond standard KYC during the test cycle. |
| Bonus-terms contradiction | 10 | Welcome page and bonus-terms page disagreed on a material clause (max-bet, cash-out cap, contribution). |
| Customer-service escalation failure | 8 | High-stakes query not resolved within five working days. |
| Unverifiable licence claim | 5 | Footer-claimed licence did not return a live record on the issuing regulator's public register. |
The 15 surviving sites form the ranked list on our home page. The cut list is held in our research repo and the names of cut sites are available on request — we do not publish the cut list publicly because operators have a legitimate interest in addressing failures privately, and because some failures (e.g. a one-off escalation issue) can be resolved before the next audit cycle.
If you operate one of the cut sites
Operators who believe their site was cut in error can request the audit transcript by emailing contact@projectbritain.com. The transcript includes the deposit reference, the play session log, the withdrawal request reference, and any support-chat logs from the audit window. If the data shows a process error on our side (e.g. a misread of which licence the site quotes), we re-run the relevant stage. If the data confirms the failure, the cut stands until the next quarterly cycle, at which point the site can re-enter the audit on the same terms as any other candidate.
We do not accept advance payment to skip stages or weight scores. We do not accept "media partnerships" that involve a guaranteed ranking position. We do accept post-publication affiliate commissions, paid on a flat-rate basis, on the same terms as every other ranked site. The commercial model is summarised on our About page and disclosed in the footer of every page on this site.
Re-test cadence
The full audit cycle runs every quarter. Each ranked site is re-tested with a fresh £200 deposit-and-cashout cycle every three months. New candidates can enter at any cycle — operators who launch between cycles are tested on the next quarterly run, not added ad hoc. The rationale is that quarterly testing matches roughly the typical lifecycle of a non-GamStop operator's promotional cycle (welcome offer rotations, payment-method changes, KYC threshold adjustments) and is short enough that ranking data does not go stale before readers act on it.
The May 2026 cycle is the most recent. The next cycle runs in August 2026. Substantial mid-cycle changes (a ranked site's withdrawal time materially changing, a new payment method launching, a licence transfer) are flagged on the home page with a dated note in the relevant section.