What ISLANDSLICE LTD does

IslandSlice LTD is a privately held, founder-owned craft rum distillery based in Dumbarton, Scotland, operating from a single facility nicknamed 'Rumbarton' since 2016. The company produces four core rums — White Rum, Dark Rum, Spiced Rum, and Scotch Bonnet Rum — using traditional Caribbean 'muck and dunder' fermentation, a combination of column and pot still distillation, and Speyside whisky cask aging for the Dark Rum expression. Founder Sylvester Herman, a fourth-generation rum maker from St. Lucia with prior service in the British military and Police Scotland, personally leads production, tastings, tours, and the mobile wagon service, making the brand's narrative tightly coupled to a single operator.

The business operates a multi-channel, direct-to-consumer model with no disclosed institutional funding, no parent company, and headcount in the 1-10 range. Revenue is generated from three streams: (1) UK-only e-commerce bottle sales processed via Stripe with a 5-day fulfilment window, (2) a mobile rum wagon hire service for weddings, festivals, private parties, and corporate events secured with a £100 deposit, and (3) private distillery tours secured with a £300 deposit. Distribution is exclusively UK-domestic, including Scottish Highlands and Islands, Northern Ireland, Isle of Man, and Channel Islands, with international shipping available only on inquiry. Marketing is built around founder-led storytelling across Facebook, Instagram, email newsletter, recipe content, and on-premise festival and tasting appearances.

The company is intentionally small and experience-led rather than scaled: there are no patents, no third-party distributor or wholesale partnerships disclosed, no published bottle pricing, and no enterprise anchor accounts. Key risks are founder dependency (the brand narrative, product expertise, and on-site event operations all rest on Sylvester Herman), UK-only geographic concentration, and the absence of disclosed revenue or growth metrics to validate scaling potential beyond a craft micro-distillery profile.

Name

ISLANDSLICE LTD

Legal name

IslandSlice

Website

https://islandslice.co.uk

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

1–10 employees

Short description

IslandSlice LTD is a Scottish rum distillery founded in 2016 in Dumbarton, producing artisanal Caribbean-influenced rums including White, Dark, Spiced, and Scotch Bonnet varieties, serving UK consumers via direct e-commerce, distillery tours, and mobile wagon hire for events.

Ownership category

akta.pro rank

Product category

Artisanal Rum Distillery

NAICS

Distilleries (312140)

SIC

Beverages (2080)

akta.pro primary industry

Spirits Distilling & Brands (CRADAIAC)

akta.pro secondary industries

Craft Distilleries & Microdistilleries (THAFALAH), Spirits Distillery Tours & Tastings (Whiskey, Rum, Gin, Vodka) (THAJAGAF)

Keywords

• Artisan rum production
• Caribbean spirits distillery
• Scottish rum manufacturing
• Mobile bar services
• Distillery tours

Headquarters

HQ city

Dumbarton

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Others

Revenue model

1. Rum Product Sales: Direct e-commerce sales of rum products including White Rum, Dark Rum, Spiced Rum, and Scotch Bonnet Rum. Customers purchase through the company's UK website with delivery throughout the UK. This is the primary revenue stream.
2. Wagon Hire / Mobile Bar Service: The company rents out its mobile rum wagon for events including weddings, festivals, private parties, and corporate events. The service includes the wagon, full rum range, mixers, and ready-to-drink cocktail cans, with Sylvester Herman as the operator. Requires a £100 deposit to secure booking.
3. Distillery Tours: Private, personal tours of the Rumbarton distillery led by Sylvester Herman. Tours cover the full rum-making process from fermentation to distillation. Requires a £300 deposit to secure a date.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels7 records

Core offering

IslandSlice LTD distils and sells a small-batch line of Caribbean-influenced Scottish rums — White Rum, Dark Rum, Spiced Rum, and Scotch Bonnet Rum — using traditional 'muck and dunder' fermentation and a mix of column and pot still distillation at its Dumbarton distillery. Alongside bottled spirits, the company sells experiential services including distillery tours, tasting experiences, and a mobile rum wagon hire service that travels to weddings, festivals, and corporate events across Scotland and the wider UK.

Product overview

IslandSlice LTD is a Scottish rum distillery offering a portfolio of artisanal Caribbean-influenced rums. The core product line consists of four distinct rums: White Rum, Dark Rum, Spiced Rum, and Scotch Bonnet Rum — all crafted at their Dumbarton facility using traditional 'muck and dunder' fermentation and a combination of column and pot still distillation. The Dark Rum notably incorporates Speyside whisky casks, reflecting the brand's fusion of St Lucian heritage and Scottish craftsmanship. Beyond bottled spirits, the company offers experiential services including distillery tours, the Rum Experience tasting sessions, and a mobile wagon hire service for events. The products are sold directly through the online shop for UK delivery.

Differentiator

Problem solved

Functional benefit

Products and services

• White Rum A signature white rum from IslandSlice's Caribbean-influenced Scottish distillery range, crafted using traditional 'muck and dunder' fermentation and column still distillation. Sold direct-to-consumer via the UK online shop for personal consumption and cocktail making.
• Dark Rum A premium dark rum aged in specially selected Speyside whisky casks, fusing St Lucian tradition with Scottish distilling expertise. Sold direct-to-consumer via the UK online shop.
• Spiced Rum A spiced rum from IslandSlice's range, crafted using traditional Caribbean rum-making methods combined with Scottish distilling precision. Sold direct-to-consumer via the UK online shop.
• Scotch Bonnet Rum A hot but surprisingly sweet and fruity rum infused with Scotch Bonnet peppers, delivering authentic Caribbean flavours with a distinctive Scottish twist. Sold direct-to-consumer via the UK online shop.
• Wagon Hire (Mobile Rum Bar Service) A mobile rum bar service for weddings, festivals, private parties and corporate events, featuring the full IslandSlice rum range with mixers and ready-to-drink cocktail cans, personally operated by founder Sylvester Herman. Requires a £100 deposit to secure the booking.
• Distillery Tours Private, personal tours of the IslandSlice distillery in Dumbarton ('Rumbarton'), where founder Sylvester Herman guides visitors through the full rum-making process from fermentation to distillation, sharing heritage and craft knowledge. Requires a £300 deposit to secure a date.
• Rum Experience (Tasting Sessions) A tasting experience at the Rumbarton distillery offering samples of the full IslandSlice rum range, designed for team outings and private groups.

Named customers5 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature3 records

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Emerging players

• Sipsmith: London-based craft distillery and one of the UK's earliest modern craft gin/spirits brands, with established on-trade and retail distribution. Comparable as a UK founder-led craft spirits brand that scaled from a similar starting point to broader market presence.
• East London Liquor Company: London-based craft distillery producing gin, vodka, and rum with a founder-led DTC and on-premise model. Comparable as a UK craft spirits brand at similar scale, using distillery tours and events as experiential revenue streams.

Direct peers

• Foursquare Distillery: Barbadian family-owned rum distillery producing premium aged and single-blend rums. Comparable to IslandSlice as a craft producer emphasising provenance, traditional methods, and quality-focused small-batch output rather than mass-market volume.
• Langs Rum: Scottish craft rum distillery producing cane-based rums in Scotland. Closest geographic and category peer to IslandSlice, sharing the unusual positioning of a Scottish-distilled rum brand targeting UK craft spirits consumers.
• Whitewater Rum Distillery: Northern Ireland craft rum producer with a small-batch, founder-led brand. Comparable to IslandSlice in scale, craft positioning, and reliance on founder storytelling and DTC distribution.
• Worthy Park Estate: Jamaican single-estate distillery producing traditional pot-still rums using heritage fermentation techniques. Comparable to IslandSlice in its commitment to traditional Caribbean rum-making methods and authentic provenance storytelling.
• Two Drifters Distillery: UK-based craft rum distillery producing aged and spiced rums via direct-to-consumer and on-trade channels. Directly comparable to IslandSlice as another small-batch UK rum producer with a strong founder-driven brand and DTC focus.

Broad incumbents

• Mount Gay Rum: One of the oldest established rum brands (Barbados), with global distribution and broad on-trade presence. Comparable category incumbent that defines the premium-rum shelf space IslandSlice would compete for.
• Diplomático Rum: Established Venezuelan premium rum brand with broad international distribution and significant marketing budgets. Comparable as a premium-positioned rum but operates at materially larger scale and broader geographic reach than IslandSlice.
• Planteray Rum (formerly Plantation): Premium rum portfolio brand with broad international distribution and recognised cask-finishing expertise. Comparable as a premium-rum brand competing for the same on-trade and craft-curious consumer, but at much greater scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/islandslicerum
• Instagraminstagram.com/islandslicerum
• LinkedInlinkedin.com/company/islandslice-ltd

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ISLANDSLICE LTD