Sister Sites: Guide to UK Online-Casino Families

In the bustling world of UK online gambling, sister sites are everywhere—but what exactly are they, and why should you care? Sister sites are online casinos operated by the same parent company, often sharing identical software, payment systems, and customer service teams. For savvy UK players, understanding these family connections is crucial.

We at Gamblermaster have thoroughly researched the UK’s most prominent casino families to create this definitive guide to casino sister sites.

By mapping out which brands share the same owner, we’ll help you identify identical gaming experiences, spot shared casino bonus structures, and make more informed choices about where to play.

Quick-Reference Sister-Site Table

Below is our comprehensive table of UK-licensed casino families currently reviewed on Gamblermaster. Each row represents a parent company and its associated brands, making it easy to identify sister sites at a glance.

How We Verified Sister Relationships

At Gamblermaster, we don’t merely accept a casino’s word for which brands are related. Our rigorous verification process ensures you get accurate information about casino sister sites:

1. UK Gambling Commission Licence Check: We cross-reference each casino’s licence number against the UKGC database. Identical licence numbers confirm shared ownership.
2. Terms & Conditions Analysis: Sister sites typically use identical legal templates with only the brand name changed. We compare T&Cs line-by-line to identify matching bonus requirements, withdrawal limits, and dispute processes.
3. Backend Technology Fingerprinting: Our team examines the casino platform code, cashier systems, and game integration methods. Sister sites invariably share the same technical architecture.
4. Customer Service Patterns: We contact support at suspected sister sites to verify if they share customer service teams and knowledge bases.
5. Real-Money Testing: Nothing beats hands-on experience. We deposit, play, and withdraw at each site to confirm identical payment processing, KYC procedures, and loyalty systems—the surest signs of sister sites.

This multilayered approach allows us to confidently map the UK’s online casino ecosystem and provide you with reliable sister site information.

Family Deep-Dives

Let’s examine each major UK casino family in detail, highlighting what makes each group unique and why it matters to you as a player.

Jumpman Gaming Sister Sites

Jumpman Gaming operates one of the UK’s largest networks of sister sites with over 150 brands under their UKGC licence 39175. Despite different themes and designs, all Jumpman casinos share remarkably similar DNA.

Key characteristics of Jumpman Gaming sister sites:

• Identical welcome offer: The 500-spin Mega Reel is present across virtually all brands
• Uniform wagering requirements: Consistently high 65× wagering on bonus funds
• Shared payment methods: PayPal, Pay by Phone, and major cards accepted network-wide
• Unified player wallet: Accounts and balances transfer between sister sites
• Identical game libraries: Nearly identical selection across all brands

Our top Jumpman Gaming picks:

• Amazon Slots – The flagship Jumpman brand with the most regular promotions
• Buffalo Spins – Western-themed sister site with identical platform benefits

Pros of Jumpman sister sites:

• Extensive game selection across all brands
• Mobile-friendly design template
• Easy navigation between sister casinos with shared login

Cons of Jumpman sister sites:

• High wagering requirements (65×) consistent across all brands
• Limited unique features between different sister sites
• Withdrawal fees applied across the entire network

For a complete list of Jumpman Gaming sister sites, visit our dedicated Jumpman Gaming Sites guide.

White Hat Gaming Sister Sites

White Hat Gaming operates under UKGC licence 52894 and has built a reputation for creating high-quality casino experiences with substantial game libraries. Their sister sites maintain consistent quality while each targeting slightly different player preferences.

Key characteristics of White Hat Gaming sister sites:

• Massive game libraries: 2,000-3,000 games from multiple providers at each brand
• Consistent withdrawal times: 24-48 hour processing across all sister sites
• Comprehensive live dealer sections: Evolution, Pragmatic Live and Playtech tables
• Similar loyalty structures: Multi-tier VIP programmes with personal account managers
• Regular bonus calendar: Daily and weekly promotions on all sister brands

Our top White Hat Gaming picks:

• Casiku – Anime-inspired design with excellent mobile experience
• Playzee – Professor Zeegmund’s laboratory theme with daily “Zeecret” bonuses

Pros of White Hat sister sites:

• Premium game selection from top-tier providers
• Responsive customer support teams
• Reliable payment processing

Cons of White Hat sister sites:

• Welcome bonuses carry 35× wagering requirements
• Similar backend experience across different brands
• VIP invitations can be slow to arrive

White Hat Gaming consistently creates some of the UK’s most respected casino brands, with each sister site maintaining the group’s high standards for game selection and customer service.

Independent Brands With No UK Sisters (MrQ)

Not all UK casinos belong to large sister site networks. Some operators, like Lindar Media’s MrQ, have chosen to focus on a single brand rather than creating multiple sister sites.

What makes MrQ unique:

• No sister sites: 100% focus on a single casino brand in the UK market
• No-wagering bonuses: All promotions come without wagering requirements
• SMS deposit options: Mobile-friendly payment methods
• Visa Direct fast withdrawals: 4-hour cash-outs via Visa Direct
• Proprietary platform: Custom-built rather than white-label solution

Pros of independent brands like MrQ:

• Focused development on a single platform
• Transparent bonus terms without wagering requirements
• Direct brand identity without dilution across multiple sites

Cons of independent brands:

• Fewer alternative options if you want a change
• No sister site benefits like shared wallets or cross-promotions
• Smaller operation than major multi-brand networks

While sister site networks dominate the UK online casino landscape, independent operators like MrQ demonstrate that quality can sometimes trump quantity when focusing resources on a single exceptional casino experience.

Kindred Group Sister Sites

Kindred Group plc operates several major gambling brands under various UKGC licences. Their sister sites share technology and financial infrastructure while maintaining distinct brand identities.

Key characteristics of Kindred Group sister sites:

• Shared Money Matrix cashier: Identical payment processing across brands
• Strong sports-casino integration: Emphasis on cross-product promotions
• 20+ year UK market presence: Established trust and reputation
• Unified responsible gambling tools: Group-wide self-exclusion and deposit limits
• Cross-brand loyalty benefits: VIP status recognition between sister sites

Top Kindred Group brands:

• Unibet – The flagship with comprehensive sports, casino, and poker offerings
• 32Red – Casino-focused sister site with strong slots library

Pros of Kindred Group sister sites:

• Stable, financially secure parent company
• Seamless movement between sports and casino products
• Long-established UK market reputation

Cons of Kindred Group sister sites:

• Less casino specialisation than pure casino operators
• Similar promotions across different brands
• Focus divided between sports and casino products

Kindred Group’s sister sites benefit from the resources of one of Europe’s largest gambling operators while maintaining distinct brand identities.

888 Holdings Sister Sites

888 Holdings plc operates multiple brands under UKGC licence 39028 for casino operations, with separate licences for their sports and poker verticals. Their sister sites share technology and development resources.

Key characteristics of 888 Holdings sister sites:

• In-house Dragonfish platform: Proprietary software across all brands
• 1-day withdrawal processing: Faster than industry average cash-outs
• Daily drops and wins: Network-wide tournament structures
• Cross-product integration: Single wallet across casino, sports, and poker
• Unified customer verification: KYC approved once for all sister sites

Top 888 Holdings brands:

• Mr Green – Premium casino experience with distinctive branding
• 888casino – The group’s flagship casino product

Pros of 888 Holdings sister sites:

• Proprietary platform with unique features
• Fast withdrawal processing
• Regular network-wide promotions

Cons of 888 Holdings sister sites:

• Limited variation in game selections across sister brands
• Similar bonus structures with 30× wagering
• Shared account restrictions apply across all sister sites

888 Holdings continues to expand its UK presence through both established brands and new sister sites, all benefiting from the group’s technological infrastructure.

SkillOnNet Sister Sites

SkillOnNet Ltd operates numerous casino brands under UKGC licence 39326, with a mix of proprietary sites and white-label partners. Their sister sites share backend technology while targeting different player demographics.

Key characteristics of SkillOnNet sister sites:

• Zero wagering promotions: Popularized by flagship brand PlayOJO
• Extensive game library: Over 3,000 titles across all sister sites
• Fast Trustly withdrawals: Emphasis on quick payment processing
• Daily bonus offerings: Similar promotional calendar across brands
• Shared tournaments: Network-wide leaderboard competitions

Top SkillOnNet brands:

• PlayOJO – Known for “no wagering, no nonsense” approach
• SpinGenie – Gamification elements with similar platform benefits
• Genting Casino – White-label version of the land-based casino brand

Pros of SkillOnNet sister sites:

• Player-friendly bonus terms compared to industry averages
• Extensive game selection from multiple providers
• Quick withdrawal processing

Cons of SkillOnNet sister sites:

• Variable customer service quality across different brands
• White-label partners may offer different experiences
• Bonus terms more complex at some sister sites than others

SkillOnNet has established itself as a major player in the UK market with a growing network of sister sites that share technology while maintaining distinct brand personalities.

ProgressPlay Sister Sites

ProgressPlay Ltd operates one of the UK’s largest white-label casino networks under UKGC licence 39335, with over 250 sister sites sharing the same platform. This high volume of sister sites creates both opportunities and challenges for players.

Key characteristics of ProgressPlay sister sites:

• Identical bonus structures: 50× wagering and 3× max-cash conversion across all brands
• PayPal acceptance: Available network-wide
• 24-hour withdrawal processing: Consistent across sister sites
• Similar game selections: Limited variation between brands
• Unified account restrictions: Terms violated on one site affect all sister sites

Our top ProgressPlay picks:

• Sparkle Slots – One of the more established brands on the network
• Buffalo King – Western-themed sister site with typical ProgressPlay features

Pros of ProgressPlay sister sites:

• Consistent experience across all brands
• PayPal availability for UK players
• Regular promotional calendar

Cons of ProgressPlay sister sites:

• High wagering requirements (50×) across all sister sites
• Limited distinction between different brands
• High number of similar white labels can be confusing

ProgressPlay operates one of the largest sister site networks in the UK, though the high degree of similarity between brands means players may struggle to find meaningful differences between their offerings.

Why Operators Create Multiple Sister Sites

You might wonder: why do casino operators launch dozens of nearly identical sister sites rather than focusing on a single brand?

There are several strategic advantages to this approach:

1. Multiple marketing angles

Different sister sites can target distinct player demographics through varied themes and designs while using the same underlying platform. This allows operators to cast a wider net without developing entirely new casino systems.

2. Multiple welcome bonuses

By creating sister sites, operators can offer new welcome bonuses to existing players who have already claimed introductory offers on other brands within the family. This encourages players to try multiple casinos within the same network.

3. White-label opportunities

Many sister sites exist because operators sell “white-label” solutions to third parties who want to launch a casino without building the technical infrastructure. These white-label partners pay to use the operator’s platform, creating another revenue stream.

4. Risk distribution

Multiple brands provide insulation against regulatory issues or reputation problems. If one sister site faces challenges, others in the family can continue operating unaffected.

5. Acquisition strategy

When established operators purchase competitor brands, they often maintain them as separate sister sites rather than merging them with existing properties, preserving brand recognition and player bases.

We at Gamblermaster believe understanding these motivations helps players navigate the sometimes confusing landscape of sister sites, recognising when they’re being offered essentially the same experience under different branding.