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The UK Franchise Growth Index

Fat Phill’s

Food and Drink · Food and Drink · Fast Food

Fat Phill’s is a Dutch-founded quick-service restaurant franchise built around smashed beef burgers and American-style comfort food. Founder and CEO Armin Vahabian opened the first restaurant in Amsterdam in 2019. The menu includes smashed cheeseburgers, Nashville-style chicken, Philly cheesesteak dishes and loaded fries. The concept has since expanded from the Netherlands into the UK and the Republic of Ireland.

Read more about Fat Phill’s

Overall Five Fibre score
66/100
Assessment
Independent
Last reviewed
Data confidence
Medium

The Five Fibre score measures this network against Twine Growth's Five Fibre Framework™ using the information available at the assessment date. It is not an endorsement, a financial recommendation or a recommendation to purchase a franchise.

About the network

More about Fat Phill’s.

The first Dutch franchise development was documented in The Hague in 2020. Fat Phill’s entered the UK through an agreement with Freshly Baked Limited, the business behind Auntie Anne’s UK development, announced in January 2024. Its first British restaurant opened in Clapham Junction in December 2024 and later closed. The current UK development is led by Asim Lutfullah and Sutha Amirthalingam, who were identified as the current master franchisees in August 2026.

The three trading UK restaurants are in Wood Green, Broadway Market in Tooting and Sutton High Street. Tooting was the brand’s first food-court format, while Sutton took over a former Wendy’s unit. These openings show how Fat Phill’s can adapt its menu and customer experience to different premises, from a compact market unit to a high-street restaurant. The UK sites have individual restaurant pages and online ordering options.

The UK franchise prospectus says the brand will consider single sites and prefers operators who can develop multiple restaurants. It outlines support with site approval, design, supply chain, operations and local marketing. The package also describes 23 days of franchise training, opening assistance, operating manuals, field support and brand reviews. Seeds Consulting helped develop the international franchise system and is named as the franchise development contact in the UK prospectus.

The 2025 UK prospectus estimates total investment at £234,850 to £277,100 excluding VAT. It includes a £19,850 franchise fee per location and separately lists a management service fee of 6% and a marketing levy of 2%, both calculated on net turnover excluding VAT. The published range covers an illustrative restaurant setup. Premises condition, equipment and the scale of fit-out affect the cost of an individual site.

Seeds Consulting later reported that Sutton cost under £100,000 on a turnkey basis, including the franchise fee and launch marketing. That figure applies to one conversion of a former restaurant. The brand continues to accept applications through its UK website, where candidates can state their preferred location, available investment and experience.

At a glance

Fat Phill’s at a glance.

Industry
Food and Drink
Franchise category
Food and Drink
Sub industry
Fast Food
Founded
2019
Franchising started
2024
Approximate franchisees
1
Approximate locations
3
Headquarters
Diemen
BFA member
No
UK origin
No
International brand
Yes
Recruitment status
Active

Investment

Franchise investment.

Investment from
£234,850 plus VAT
Investment to
£277,100
Management franchise
Yes

View franchise opportunity

Investment figures change. Confirm current requirements directly with the franchise network before making any decision.

Five Fibre assessment

How the foundations score.

Every franchise network is assessed across the five connected areas Twine Growth believes support sustainable franchise growth.

How the Five Fibre score is calculated

01 Assess Strong13/20

Fat Phill’s has repeated its restaurant model across three active London locations under one operating group. Wood Green and Sutton give it high-street examples, while Tooting shows that the kitchen and menu can work from a smaller market unit. The closure of Clapham Junction is also part of the UK trading record and limits how much can be concluded from the openings alone.

The UK prospectus gives candidates a breakdown of setup costs and illustrates potential trading outcomes. The reported cost of converting the former Wendy’s in Sutton also gives a real example of how a site can come in below the standard illustration. It establishes a reported opening cost for one property, while the subsequent sales, margins and operator returns remain unpublished.

  • Proven and profitable core model, 2.5/5. Three trading UK restaurants establish that the format has been replicated. Representative UK restaurant profitability is unverified.
  • Founder independence, 2.5/5. The UK group has local operating leadership and has delivered multiple openings. Its ability to operate successfully for 30 days without daily input from key leaders is unverified.
  • Ideal franchisee, 3/3. The UK prospectus looks for operators who can build service-focused teams and have the resources for development. Its preference for multi-site partners is explicit.
  • Franchisee commercial viability, 2/4. The investment breakdown and reported Sutton conversion give candidates a basis for evaluating costs. Verified UK franchisee returns after operating and financing costs are unavailable.
  • Market differentiation, 3/3. Fat Phill’s combines smashed burgers, Nashville-style chicken and Philly-inspired dishes in a recognisable restaurant format that can work on the high street or in a compact food court.
02 Build Strong16.5/20

The UK prospectus sets out much of the infrastructure a restaurant operator would need. It includes manuals, a brand operating system, a certified training location, 23 days of training and support through opening. It also covers design, equipment, supply chain and tools for cost control and compliance. Those are specific commitments for a business that must deliver consistent food and service across multiple kitchens.

The UK opening evidence gives some indication of how that infrastructure is used. Tooting and Sutton involved local operating leadership alongside support from the wider brand. The public record gives less detail on how franchisees access the full package of tools or how much of a new UK launch the local team can deliver independently.

  • Operational playbook, 5/5. The UK franchise package explicitly includes manuals and an operating system, backed by defined restaurant setup and support.
  • Onboarding and training, 4/4. The prospectus specifies 23 days of training, a certified training location, online training and opening assistance.
  • Brand standards, 4/4. The UK support package describes site design and approval, operating reviews, brand checks and coaching.
  • Central tools and systems, 1.5/3. Cost control, compliance, training and point-of-sale systems are described. Access to all tools and templates through a single franchisee system is unverified.
  • Launch without constant founder involvement, 2/4. UK operating leadership and a field support structure are visible. The extent of independent UK launch delivery remains unclear from public evidence.
03 Launch Strong16/20

Fat Phill’s gives UK candidates a clear proposition. The application form is available on the UK site, and the prospectus explains the restaurant formats, investment assumptions, fees, training and the preference for operators who can open more than one unit. Seeds Consulting is identified as the franchise development contact. Candidates can also look at existing UK restaurants to understand how the offer works in different settings.

The public journey explains how to make contact and what information to provide. The form asks about the candidate’s preferred location, experience and investment. The prospectus describes an initial conversation and site approval, but the sequence between those stages, including how the current UK team assesses applicants, is less visible.

  • Franchise proposition, 5/5. The UK prospectus connects the menu, operating formats, support and investment to an identifiable restaurant business.
  • Recruitment messaging, 4/4. It addresses applicants able to build and manage a team and makes the preference for multi-site development clear.
  • Enquiry journey, 2/4. The brand provides a UK form and prospectus contact. The full route from enquiry to agreement is unpublished.
  • Structured discovery, 2/4. Candidates are asked about capital, work experience and preferred location, and the prospectus describes fit and site approval. A complete, current UK approval process was unverified.
  • Launch plan, 3/3. The UK development agreement, first market entry, subsequent openings, prospectus and live UK recruitment form demonstrate that the offer has been taken to market.
04 Grow Critical Gap3.5/20

Fat Phill’s has opened three trading UK restaurants under the current operator group. That shows local capacity to develop multiple locations. Public evidence of new franchise owners joining is much thinner. The distinction matters because one operator opening another shop tells us about that group’s development capacity, while recruitment growth depends on bringing suitable new partners into the network.

The UK prospectus identified locations in development, including Wood Green, Silvertown and Stratford. Wood Green opened, and later reporting identifies Tooting and Sutton as the other trading sites. Silvertown and Stratford were not verified as trading locations. Public sources give an expansion direction and site criteria, but a current list of available territories or signed UK operators is unpublished.

  • Consistent monthly franchise enquiries, 0/5. A live application form and trade promotion establish recruitment activity. Monthly enquiry volumes and consistency are unverified.
  • Enquiry source tracking, 0/4. Seeds Consulting and the brand-owned form are identifiable routes. Their contribution to qualified enquiries is unpublished.
  • Enquiry-to-franchisee conversion, 0/4. There is no public UK conversion rate or series linking enquiries, signed operators and opening dates.
  • Territory development plan, 1.5/3. The prospectus sets out site formats and named development areas. A current list of next UK territories, with their status, is unavailable.
  • Recruitment beyond the founder, 2/4. Seeds Consulting and the current UK operating group provide roles beyond Armin Vahabian. The ongoing division of responsibility for screening, follow-up and approvals is unverified.
05 Amplify Strong16.5/20

Fat Phill’s has visible ways to attract customers to individual UK restaurants. Each trading site has a dedicated page, and delivery marketplaces give customers another way to discover the menu and order. At Sutton, the opening also drew local coverage and a ribbon-cutting attended by the Mayor of Sutton. The prospectus sets out pre-opening and launch marketing, alongside ongoing field marketing support.

The next question is how each restaurant turns launch attention into repeat demand. A market unit, a neighbourhood high street and a former Wendy’s will each draw a different mix of walk-ins, direct orders and deliveries. The public evidence shows the routes to those customers. It gives less detail on the ongoing local marketing plans for each restaurant or how franchisees compare results across those routes.

  • Local customer acquisition support, 5/5. The prospectus describes marketing before and after opening, and the Sutton launch provides a documented UK example.
  • Local online presence, 4/4. All three trading UK restaurants have dedicated pages and can be found through ordering or delivery platforms.
  • Ongoing local marketing plan, 2/4. An annual marketing calendar and ongoing field support are described. A separate post-launch plan for each UK site is unpublished.
  • Franchisee-level tracking, 1.5/3. The package identifies point-of-sale and cost-control systems, and local orders are routed by restaurant. Reporting on acquisition cost, conversion and repeat purchases by operator is unverified.
  • Customer acquisition beyond personal referrals, 4/4. High-street and food-court footfall, direct ordering, delivery marketplaces and local launch publicity provide established ways to attract customers.
66/100 Overall Five Fibre score

Fat Phill’s scores 66 out of 100 in the UK and sits in the Growth Ready band. It has three trading restaurants, one publicly identifiable current operating group and a detailed UK franchise prospectus. The UK footprint includes a compact market unit and high-street restaurants, giving candidates different examples of what the brand can do with a site.

Build and Amplify are the joint strongest fibres. The franchise package specifies manuals, training, opening support and brand checks. The trading sites also show how individual restaurants can use local pages, direct ordering, delivery and launch publicity to attract customers. Together, these provide more evidence of how a restaurant is set up and marketed than of how the network recruits and develops independent franchise owners.

Grow is the weakest fibre. The three open sites belong to the same current franchise operation, and the original Clapham Junction site has closed. The old UK expansion target gives context about ambition. The current evidence is clearer on openings delivered by the existing group than on signed operators, territory availability and the pace of wider franchise recruitment.

  • The three verified trading UK restaurants are Wood Green, Tooting Market and Sutton.
  • The UK prospectus sets out an indicative investment of £234,850 to £277,100 excluding VAT, with a separate reported cost below £100,000 for the Sutton conversion.
  • The 23-day training programme, site approval support and operating reviews make the published UK package specific.
  • The current franchise operator group is publicly identified. UK franchisee earnings and the conversion of enquiries into trading franchises remain unverified.

The UK evidence supports a developed franchise offer with local operating examples. The difference between the standard investment illustration and the Sutton conversion shows how strongly the deal depends on the premises. The evidence for scale will become clearer as more independent UK operators open and publish results across comparable formats.

Benchmark

How this network compares.

Overall, against the whole Index
This network66
UK Index average64
Overall, against Food and Drink (179 networks)
This network66
Industry average65

Explore Food and Drink in the UK Franchise Data Explorer

Sources

Research sources.

40 public sources used for this profile
  1. https://fatphillsdiner.com/
  2. https://fatphillsdiner.com/franchise-application/
  3. https://fatphillsdiner.co.uk/
  4. https://fatphillsdiner.co.uk/franchise-application/
  5. https://fatphillsdiner.co.uk/london/
  6. https://fatphillsdiner.co.uk/tootingmarket/
  7. https://fatphillsdiner.co.uk/london-sutton/
  8. https://fliphtml5.com/pygwz/suib/Fat_Phill%27s_Prospectus_UK_2025/
  9. https://hallofranchise.nl/updates/het-succesverhaal-van-armin-vahabian-eigenaar-van-fat-phills/
  10. https://www.missethoreca.nl/343898/fat-phills-breidt-uit-naar-den-haag-en-rotterdam
  11. https://www.restaurantonline.co.uk/Article/2024/01/16/smash-burger-brand-fat-phill-s-looks-to-enter-uk-market/
  12. https://www.restaurantonline.co.uk/Article/2026/08/19/netherlands-based-burger-brand-fat-phills-chooses-sutton-for-third-london-restaurant/
  13. https://propelinfonews.com/pi-Newsletter.php?datetime=2026-08-19+08%3A00%3A00
  14. https://www.propelinfonews.com/pi-Newsletter.php?datetime=2026-03-06+08%3A00%3A00
  15. https://www.thecaterer.com/news/amsterdam-fat-phills-burger-uk-expansion
  16. https://www.franchisedirect.co.uk/news/fat-phills-set-to-enter-uk
  17. https://seeds-consulting.co.uk/fatphillsgoestoireland
  18. https://www.thebfa.org/franchisors/
  19. https://find-and-update.company-information.service.gov.uk/company/06612738
  20. https://find-and-update.company-information.service.gov.uk/company/06612738/officers
  21. https://find-and-update.company-information.service.gov.uk/company/16679640
  22. https://find-and-update.company-information.service.gov.uk/company/16679640/officers
  23. https://find-and-update.company-information.service.gov.uk/company/16679640/persons-with-significant-control
  24. https://www.openbare-inspectieresultaten.nvwa.nl/bedrijfsinspecties/horeca-ambacht-en-retail/fat-phills-franchise-bv
  25. https://ratings.food.gov.uk/business/1965579
  26. https://haringey.gov.uk/sites/default/files/2025-12/food-premises-register-december-2025.pdf
  27. https://www.linkedin.com/company/fat-phill-s-nederland
  28. https://www.linkedin.com/posts/fat-phill-s-nederland_its-official-fat-phills-will-open-100-activity-7153077165163515904-9x03
  29. https://www.linkedin.com/posts/armin-vahabian-461052b7_while-weve-been-keeping-things-relatively-activity-7475498704725213184-nDKu
  30. https://uk.linkedin.com/company/seeds-consulting-uk-
  31. https://www.linkedin.com/posts/matteofrigeri_smashburger-franchise-activity-7152979411045150721-py6r
  32. https://www.linkedin.com/posts/propel-info-limited_live-from-propel-infos-franchisor-showcase-activity-7399104184190464000-z8gN
  33. https://nl.linkedin.com/in/robert-wols-90066427
  34. https://uk.linkedin.com/in/sutha-amirthalingam-368a7716
  35. https://uk.linkedin.com/in/asim-lutfullah-b5b551a
  36. https://bmtooting.co.uk/restaurants-and-bars/
  37. https://www.theinfatuation.com/london/reviews/fat-phills
  38. https://www.ubereats.com/gb/store/fat-phills-wood-green/ddyoC4RYXmCHsm3mJG43aQ
  39. https://deliveroo.co.uk/menu/london/tooting/fat-phills-tooting-at-broadway-market
  40. https://deliveroo.co.uk/menu/london/sutton-and-west-sutton/fat-phills-sutton

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