About
The UK’s leading AI SEO Agency
We have seen the future of how people will search for products, brands and businesses. AI is here to stay and Castle has used its 13 years of SEO experience as an agency to fuse Generative Search Optimisation with paid advertising, paving the way for our clients to capture their markets under the new world order.

Our values
Six words we actually named the company after.
Castle is an acronym before it is a brand. Each letter is one of the things we hire and measure against.
Community
Community is at the core of Castle. Our team is made up of skilled digital marketers who fuse to create a unique marketing experience through bold innovation and data-driven techniques. With a commitment to excellence and creativity, collaboration is key to our success.
Ambitious
We never settle for second best. Our highly-skilled team are ambitious in everything we do, working hard to not only reach our targets but going above and beyond to deliver and outperform ourselves each time we hit a new milestone.
Solution-driven
At Castle, we’re forward thinking and solution-driven. If you have a problem we won’t stop until we’ve found the solution, balancing our tried and tested strategies with the development of innovative and out the box ideas to tackle the problem at hand.
Talented
Castle benefits from the experience of our extremely talented marketeers with a combined total of over 150 years of marketing experience. We collaborate and share knowledge between us, always working to improve and educate ourselves and each other every single day.
Leaders
We are leaders in our respective fields. Always at the forefront of the marketing world, our experts implement industry-leading campaigns to deliver a strong ROI. We strive to be the best, always keeping up to date with the latest trends and innovations.
Empowered
We strive to encourage, enlighten, and empower each other. Each individual is hired for their specific skillset and how this complements the wider team and company ambition. The team are empowered to make a difference through their unique talent.
Our Liverpool office
Mann Island.
Castle is based at Mann Island, Liverpool, in one of the most recognisable parts of the city. Step outside the office and the River Mersey, the Three Graces, the Museum of Liverpool, Royal Albert Dock and Liverpool ONE are all within sight or walking distance.
For an agency working with businesses across the UK and internationally, Mann Island feels like a fitting place to call home. Liverpool has always been a city that looks outward.
Castle works with clients across the UK, US & Europe, specialising in AI SEO, GEO, AEO and paid advertising with Meta, TikTok and Google.
Our team of UK based employees have a combined 150 years experience growing ecommerce businesses and companies looking for lead generation.
Castle Int. · 17 Mann Island, Liverpool L3 1BPGet directions →
Our people
Platforms don’t build businesses. People do.
Castle brings together specialists across strategy, paid media, development, SEO, ecommerce, design, creative, video and account management — each person contributing a different skill set and perspective.

Heritage
Why a thirteenth-century castle, and why this stretch of water.
From Liverpool to the world
There aren’t many office locations that can tell the story of an entire city, but Mann Island comes close. Long before the modern buildings that stand here today, this part of the waterfront formed an important piece of Liverpool’s historic dock system. It sat between the River Mersey and the docks that helped turn Liverpool into one of the world’s most significant trading cities.
Mann Island: where old Liverpool meets new Liverpool
Mann Island sits at a natural meeting point between Liverpool’s past and its future. In one direction are the Three Graces, the historic docks and the architecture that made the waterfront famous. In the other is a modern city shaped by technology, creativity, culture and new industries.
Liverpool Castle
Liverpool Castle helped inspire the Castle name. Built in the thirteenth century, it once stood at the heart of the city and played an important role in Liverpool’s early development.
The people behind the performance
Platforms, tools and technology matter, but they don’t build businesses on their own. People do. Castle brings together specialists across strategy, paid media, development, SEO, ecommerce, design, creative, video and account management, with each person contributing a different skill set and perspective.

Diversity & inclusion at Castle
Culture is everything to us.
Castle is dedicated to ensuring we are a diverse and inclusive workspace. However, we understand that there is always more we can be doing to enable a diverse and wholly inclusive culture here at Castle. We are always striving to improve and evolve, which is why we are undertaking a range of diversity and inclusion projects — including regular staff surveys and a social committee that promotes team building.
We’re currently in the process of improving and updating our policies and procedures to provide the best opportunities and benefits for our team. Culture is everything to us. So we are committed to cultivating a diverse and inclusive culture that ensures our employees feel a sense of pride, community and belonging — no matter their age, gender, sex, race, religion, sexual orientation or disability.

Trusted by
Some of the brands we’ve worked with.

Come and see the place
We’re on Mann Island. The kettle works.
If you’d rather talk than read, book a slot and we’ll go through your account properly — what we’d change, in what order, and what it should be worth.