How Much Does an SEO Agency in London Cost in 2026?

London SEO agencies typically charge between £490 and £5,800 per month for retained services in 2026, depending on scope, competition level, and the seniority of the team working on your account. Project-based SEO audits range from £500 to £5,000.

London SEO pricing breakdown

Here's what you can expect at each price point:

£490–£800/month — Starter SEO

Best for solopreneurs and pre-Series A startups testing demand. At this level you'll typically get a one-time technical audit, 8–10 target keywords, basic monthly reporting, and 4 hours of senior SEO time per month. This is enough to fix technical foundations and start ranking for low-competition borough-level keywords.

£1,200–£2,500/month — Growth SEO

The sweet spot for Series A startups and SMEs. This buys you continuous technical SEO, 25+ target keywords, 4 long-form content pieces per month, AI Overview citation engineering, link building from authoritative UK sources, and fortnightly strategy calls. Most London businesses see meaningful organic gains within 4–6 months at this level.

£3,000–£5,800/month — Scale SEO

Enterprise-level SEO with unlimited keyword scope, a dedicated team (SEO lead + content + technical), 8+ content pieces per month, weekly calls, executive dashboards, and white-glove technical migrations. This is for businesses dominating their London market who need to maintain and expand that position.

What affects the price?

• Competition level: "SEO agency London" (KD 64) costs more to rank for than "SEO agency Shoreditch" (KD 25)
• Current site health: A site with major technical debt needs more upfront work
• Content velocity: More content pieces per month = higher cost but faster compounding
• Link building scope: Authoritative UK backlinks from .gov.uk and .ac.uk sources require specialist outreach
• AI/GEO work: Getting cited in Google AI Overviews and ChatGPT requires structured content engineering

How Meridian compares

Meridian prices all SEO retainers 40% below the London market average. Our Growth tier starts at £1,490/month — comparable scope from most London agencies runs £2,500+. We publish transparent pricing because we think hidden fees are a red flag.

How to choose an SEO agency

Ask these five questions before signing:

1. Can you show me case studies with real revenue attribution, not just traffic graphs?
2. Do you do GEO/AEO work (AI Overview and ChatGPT citation engineering)?
3. Who owns the content and the backlink profile if we part ways?
4. What's your average client retention rate beyond 12 months?
5. Will I have a dedicated account lead or rotate through juniors?