The 10 Best SEO and GEO Agencies for UK Companies Expanding to the US (2026)

Every other market-entry guide on this site starts with a language barrier. This one starts with the absence of one, which turns out to be the problem. A British company entering Germany knows it needs localization. A British company entering the United States often assumes it does not, ships the UK site with a dollar toggle and a New York mailing address, and spends a year wondering why a brand that dominates Google in Manchester cannot get past page four in Miami. The answer is that the US search market is a different country with the same alphabet: different queries, different spelling, different trust signals, a different set of publications that confer authority, and a population that increasingly asks AI assistants for recommendations instead of scrolling results.

This guide ranks ten agencies on their ability to fix that, weighting US presence, documented localization method, published proof and AI search capability. It sits alongside the Japan and China guides, which cover the same problem with a language barrier added.

The UK in the US market, in numbers

The UK Department for Business and Trade’s July 2026 factsheet puts UK direct investment in the United States at £529.9 billion at the end of 2024, up £53.5 billion in a year, and total bilateral trade at £333.9 billion, with the UK running a £72.8 billion surplus. Around 37,400 British businesses exported goods to the US in 2025, and the US accounts for 17.4% of all UK trade. On the American side, the US Bureau of Economic Analysis ranks the UK fourth among sources of US inward FDI at $738.3 billion, behind Japan, the Netherlands and Canada. The commercial relationship is enormous and mature, which means the US market is also full of British brands that never built US search authority and are competing against each other for the same neglected keywords.

The English-to-English localization trap

The search engines are nearly identical: Google holds 91.75% of UK search and 86.1% in the US. That is where the similarity ends. The queries are different, the pages that satisfy them are different, and the sources that confer authority are different. Below are the mistakes that show up in almost every UK site pointed at America.

The last row is the one that did not exist five years ago. ChatGPT reached 900 million weekly users in February 2026, and Orbit Media’s citation research shows AI engines cite sources that overlap with Google’s top ten only 10% to 30% of the time. A British brand that has never been described on the American sources those engines read does not get recommended to Americans, however strong it is at home. That is why AI search capability is weighted heavily in the rankings below.

The rankings at a glance

The 10 best SEO and GEO agencies for UK companies expanding to the US

1. Skyfield Digital (top pick)

Meriden, CT (serves clients across the US and internationally)

Best for: UK companies of any size that need American buyers and AI assistants to find them, from DTC brands and SaaS to manufacturers and clinics.

• Founded: 2022, Meriden, Connecticut
• Services: US market-entry SEO, Generative Engine Optimization, US entity and schema setup, Google Business Profile for US locations, US keyword research and transcreation, citation and link building on American sources, web development
• Google rating: 5.0 rating from 20 verified Google reviews
• Pricing: $1,000 to $10,000+ per month, average effective rate around $100 per hour, free audit with no obligation
• Proof: 918.5% organic traffic growth for SwordSlice in six months, 813.9% for The One Gown, 380.5% in one year for Riveter Consulting Group
• Credentials: Semrush Certified Agency Partner, DesignRush Top SEO Company, 95% client retention, 100% US-based team
• UK clients: About eight UK companies as of September 2026, across medical aesthetics, manufacturing and ecommerce

Strengths: Skyfield is a US agency that already does this for British companies: it manages a growing UK roster, including the North American arm of a UK engineered wood flooring brand, alongside clients in China, Mexico and the Philippines. It approaches US entry from the inside, knowing which American directories, trade publications and review platforms move rankings and AI citations in each category, and it builds the brand’s US entity first so ChatGPT, Gemini and AI Overviews can recommend a company they had never encountered in a US context. Reporting runs on a shared board updated weekly, in a time zone overlap that works for a UK head office. Results are public: 918.5% organic growth for SwordSlice, 380.5% for Riveter Consulting Group.

Limitations: Skyfield does not run paid media or social and keeps its team small by design, so a UK company that wants a 50-person integrated agency with a London account team should look at Croud or Jellyfish, at several times the cost.

The United Kingdom page sets out how Skyfield structures a US program for UK-headquartered companies, and the global SEO service covers brands entering the US and other markets together. Every engagement starts with a free audit that shows how the brand currently appears to American searchers and to AI engines, which for most UK entrants is either the UK site served to the wrong audience or nothing at all.

2. Croud

London (Shrewsbury; New York, Atlanta, Dubai)

Best for: UK mid-market and enterprise brands that want a British agency with staff on the ground in the US.

• Founded: 2011, as an SEO agency
• Size: About 600 in-house staff plus an on-demand network of 2,900 specialists
• US presence: New York and Atlanta offices confirmed
• AI search: Not stated on the pages reviewed
• Pricing: Not published

Strengths: The most complete UK-plus-US footprint of any British agency, with roots in SEO rather than media.

Limitations: Technical international SEO and AI search capability are not spelled out on the site; ask for the method.

3. Re:signal

London and Manchester, with a dedicated US practice

Best for: UK retail and ecommerce brands entering the US.

• Size: 10 to 49 people
• Clients: Under Armour, ASICS, Reformation
• AI search: AI Search service covering LLMs, answer engines and agentic commerce
• Reviews: 4.9 on Clutch from 4 reviews; a 6x ROI in 12 months case study
• Pricing: $5,000+ projects, $150 to $199 per hour, typical engagements $50,000 to $199,999

Strengths: Retail search specialists with a US page, an AI search offering and household-name references.

Limitations: Small team, no confirmed US office address and a thin public review count for the price.

4. Impression

Nottingham and London, with a New York office opened in 2025

Best for: UK growth brands that want a B Corp agency making its first US push alongside them.

• US presence: New York office opened as the agency’s first US expansion after 27% revenue growth
• Services: Data-led SEO, PPC and digital PR
• Credentials: B Corp certified; clients include Exclusive Resorts and AcquireUp
• AI search: Not stated
• Pricing: Not published

Strengths: A well-regarded UK search agency now physically in the US market.

Limitations: Very new to the US; the New York office is in its first year.

5. Delante

Krakow, Poland, with London and New York offices

Best for: UK companies that want an established international agency at accessible rates.

• Founded: 2014
• Size: 65+ specialists, 400+ clients across 35+ markets
• AI search: AISO: AI search optimization with audits, training and visibility monitoring
• Reviews: 4.9 on Clutch from 159 reviews, Google Premier Partner
• Pricing: $1,000+ projects, $50 to $99 per hour

Strengths: Offices in both London and New York, the largest verified review base of any agency here and the lowest hourly band.

Limitations: Delivery is Poland-based; the London and New York offices are client-facing.

6. Jellyfish

London, with US presence including New York

Best for: large UK brands that need media, content and LLM measurement at scale.

• Services: Global media and creative; Global Language Services adapting content in 150+ languages
• AI search: Share of Model, a proprietary measure of brand presence inside LLMs
• Pricing: Not published

Strengths: One of the few agencies with a named metric for how a brand shows up in AI models.

Limitations: Media-led at enterprise scale; technical SEO detail is not visible on the site.

7. Brainlabs

London, with a New York office reported

Best for: UK performance marketers that want AI visibility from a large agency.

• Founded: 2011
• AI search: AI Visibility: SEO, digital PR and content to make the brand visible in LLMs and search
• Pricing: Rate cards provided upfront on request

Strengths: A clearly branded AI visibility service and a stated commitment to price transparency.

Limitations: The US office is corroborated only by third-party job listings, and international SEO method is thin on the site.

8. Ignite Visibility

San Diego, CA (Irvine, Orlando, New York)

Best for: UK companies that want a large US agency with a documented technical method.

• Founded: 2013
• International SEO: Hreflang, regional sitemaps, localization of messaging, site structure strategy
• AI search: GEO and AI SEO
• Reviews: 4.8 on Clutch from 175 reviews
• Pricing: $1,000+ projects, $100 to $149 per hour

Strengths: Four US offices and the most explicit international SEO page of any US agency reviewed.

Limitations: No UK office, so coordination with a British head office runs across time zones.

9. Semetrical

London (City Road)

Best for: UK companies that want a London team to run international SEO and GEO remotely.

• Services: International digital marketing including SEO and GEO
• US presence: None confirmed
• Pricing: Not published

Strengths: Solid SEO and GEO service depth from a London base.

Limitations: No US office, so US authority building and entity work are handled from the UK.

10. Distinctly

London (Featherstone Street)

Best for: UK businesses that want a named international expansion SEO service.

• Services: International SEO with an explicit international expansion line
• US presence: None confirmed
• AI search: Not verified
• Pricing: Not published

Strengths: International expansion is a defined product rather than an afterthought.

Limitations: No US office and no confirmed AI search practice.

Frequently Asked Questions

Agencies were reviewed in September 2026 on their own sites and, where relevant, on Clutch and press coverage, for US presence, UK-US specialism, SEO depth, AI search offering and published proof. US office claims are marked as confirmed, reported or unconfirmed according to the source. Rise at Seven, Hallam, Passion Digital, Blue Array, Builtvisible and The SEO Works are strong UK agencies that were not included because a US-entry practice could not be verified. Skyfield Digital publishes this list and is ranked first; the limitations on every entry, including ours, are there so you can weigh that.

Sources