Castle International Ltd. Verified Company

Castle International is a full-service digital agency based at Mann Island in Liverpool, working with clients across the UK and internationally.

Castle Int. operates an unlimited-request model, which is the core difference between how we work and how most agencies do. While conventional agencies sell a fixed block of hours each month so clients end up rationing their marketing and negotiating scope every time priorities change, Castle charges a single monthly fee and accepts unlimited briefs across every service line, which means strategy can shift as the market does.

Every engagement is measured against revenue. Ranking, impressions, and engagement are diagnostics, not outcomes.

What we deliver

Search: SEO, technical SEO, local SEO, and Generative Engine Optimisation for visibility inside AI tools, such as ChatGPT, Gemini, Perplexity, and Grok

Paid Media: Google Ads, Meta Ads, Paid Social, affiliate programs, and high-intent lead generation funnels.

Ecommerce: Shopify development and maintenance, store builds and migrations, conversion rate optimisation, and ongoing ecommerce marketing.

Creative and build: web design and development, branding and identity, and video production.

Sectors:
Ecommerce and DTC retail, legal services and claims, healthcare and pharmacy, professional services, and digital assets.

A few of our best works:

Swan: the British homeware branding trading since 1920s, came to Castle Int. to grow site traffic and online sales
HNK Solicitors: a Liverpool civil litigation firm, needed a full rebrand alongside a new website engineered for lead generation.
Liverpool Business News: one of the North West's leading business titles, commissioned a complete rebuild and brand refresh.
BiFold Local: a Liverpool door manufacturer supplying nationwide works with us on lead generation.


Accreditations:

Certified Google Partner, Microsoft Advertising/Bing Partner, and Shopify Partner. Forbes-accredited consultancy and GDPR compliant.