Best SEO companies in United Kingdom

What retainers actually start at in United Kingdom

Median entry retainer is £5k/mo, with the range running £4k/mo to £8k/mo. These are floors, not averages of what clients spend — scope, competitiveness and content volume move the real number well above them.

Floors shown in GBP, as published or disclosed by each company.

How the Hub Score on this page is calculated

100 points across five factors, each computed from a fact you can check yourself. Nothing here is bought, voted on or averaged from review sites.

• 15 ptsOperating resilience — 3 points under 3 years; 6 at 3-5; 9 at 6-10; 11 at 11-15; 13 at 16-20; 15 at 21+ years. Tenure is useful evidence of continuity, but diminishing bands prevent age from dominating the score.
• 25 ptsDelivery capability — A monotonic diminishing-return curve: 1 service = 6, 2 = 10, 3 = 14, 4 = 17, 5 = 20, 6 = 22, 7+ = 25. Additional documented capability can reduce hand-offs, while diminishing returns limit incentives to pad service lists.
• 25 ptsSector evidence — Industry coverage contributes 10, 14, 16 or 18 points; 1, 2 or 3+ source-linked case studies add 3, 5 or 7 points. Industry coverage establishes relevance; substantive case studies add depth. Diminishing returns stop a long tag or case list from overwhelming the score, while overall source coverage remains a separate confidence measure.
• 20 ptsCommercial clarity — 4 for a live site + 6 for a disclosed entry floor + 5 for a stated pricing model + 5 for a specific best-fit client statement. The model rewards buyer-facing commercial clarity, not higher prices or a preference for retainers over projects. Source depth is tracked separately in Evidence Confidence.
• 15 ptsDelivery capacity — Team bands map monotonically: 10-20 = 5, 20-50 = 8, 50-150 = 11, 150-250 = 13, 250-500 or 500+ = 15. Headcount is treated as capacity, not quality. Larger teams are no longer penalised through an unvalidated ideal-size curve.

In-house services across United Kingdom

Share of listed companies delivering each discipline themselves. Gaps here are the work you would need a second vendor for.

• Technical SEO10 · 100%
• Content Marketing9 · 90%
• Analytics5 · 50%
• Digital PR5 · 50%
• Paid Media5 · 50%
• Enterprise SEO3 · 30%
• Web Development3 · 30%
• Conversion Optimization2 · 20%

Where the vertical depth sits

Industries the listed companies document real work in — useful when you want a shop that already knows your SERP.

• Ecommerce10 · 100%
• Financial Services6 · 60%
• SaaS & Technology6 · 60%
• Manufacturing & B2B5 · 50%
• Education4 · 40%
• Hospitality & Travel4 · 40%
• Automotive2 · 20%
• Healthcare2 · 20%