Stack Digital Limited
- Founded
- 2019-01-01 in Stockton-on-Tees, England
- Headquarters
- Stockton-on-Tees, England
- Phone
- +44 1642-425585
Stack Digital Limited is a performance search engine optimisation and online marketing agency founded in 2019 by David Calvert and Christopher Basford. Headquartered in Stockton-on-Tees, County Durham, England, with a satellite office in Malta, the agency specialises in SEO, PPC, web development, and social media marketing for the iGaming, travel, and e-commerce sectors. Its core offering combines technical SEO, content marketing, and online PR services tailored to online casinos, sports betting operators, and affiliate/platform providers. The company positions itself as an SEO-first agency, leveraging over 35 years of combined industry experience to deliver sustainable online growth. Stack Digital Limited operates as a private limited company registered in England and Wales (company number 12359881), with a reported team size of 2–10 employees. Its client portfolio includes global brands in gambling and travel, and it maintains a presence on major B2B directories such as Clutch, DesignRush, and iGamingSuppliers.com.
Detailed Review
Business Model and Services
Stack Digital Limited distinguishes itself within the competitive digital marketing landscape by focusing exclusively on high-regulation, high-competition verticals. The agency’s service stack is built around four pillars: technical SEO (site architecture, crawl optimisation, schema markup), content marketing (topical authority building, multilingual editorial strategy), online PR (digital reputation management, link acquisition), and paid media (PPC campaign management across search and social). Web development is also offered as an implied service supporting optimisation efforts.
Founding and History
The company was founded in 2019 by David Calvert and Christopher Basford, who bring a combined 25+ years of marketing experience prior to founding the agency, with particular strength in the iGaming and e-commerce spaces. Clients have noted the team’s ability to navigate the stringent regulatory requirements of the gambling industry while still achieving measurable ranking improvements and traffic growth.
Geographic Reach and Market Position
Stack Digital Limited’s geographic reach is broad: while its registered office is in Stockton-on-Tees, it also operates a Malta-based digital marketing agency (stackdigital.eu), suggesting a foothold in the European iGaming hub. The company’s B2B presence on iGamingSuppliers.com further solidifies its reputation as a specialist vendor to operators and affiliates. Its size (2–10 employees) indicates a boutique operation where senior founders remain hands-on in client delivery. The agency’s rating on Clutch (based on client reviews) and its DesignRush profile reflect a consistent record of client satisfaction, particularly in the technical SEO and content strategy domains.
Financial and News Profile
Financial details are not publicly disclosed, and the company has not featured in major news cycles regarding funding, acquisitions, or partnership expansions. No recent strategic announcements or licensing information were found in public sources.
Key Products
Technical SEO
Audit and optimisation of website architecture, crawling, indexing, and schema markup to improve search engine visibility.
Content Marketing Solutions
Editorial strategy, topic clustering, and content creation designed to build topical authority in iGaming, travel, and e-commerce.
Online PR Services
Digital reputation management, link building, and media outreach to enhance domain authority.
PPC Management
Paid search and social media advertising campaigns focused on high-ROI traffic generation.
Web Development
Custom website builds and optimisations to support SEO and user experience goals.
Offices & Headcount
6 employees (approx.)