SEO · Cardiff, United Kingdom
SEO Agency in Cardiff.
Technical, content and authority-driven SEO programmes designed to grow qualified organic traffic and revenue. Cardiff brands compete on a national stage, and digital is a core part of how they win.
What we do
A SEO agency in Cardiff built for ambitious brands.
SDM is an independent digital agency working with clients across Cardiff and United Kingdom. We combine strategy, design, engineering and performance in one team, so SEO decisions ladder up to real commercial outcomes.
- Technical SEO audits01
- Keyword and content strategy02
- On-page optimisation03
- Digital PR and link building04
- Local SEO05
- Reporting06
Why brands in Cardiff choose SDM
Award-winning craft
Recognised by Awwwards, Prestige Awards and the British Business Awards for SEO work.
Commercially focused
We measure SEO success in pipeline, revenue and share of voice, not vanity metrics.
Local and global
Studios in London and New York, delivering SEO for brands in Cardiff and beyond.
Recognition
Recognised for the work. Trusted for the results.
- 2025
British Business Awards
Fastest Growing Marketing Agency
- 2025-2026
Prestige Awards
Marketing Agency Of The Year
- 2022-2026
Awwwards
Site Of The Day (x4)
- 2024-2025
Prestige Awards
Marketing Agency Of The Year
- 2024-2025
CSSWINNER
Site Of The Day (x2)
Other SEO locations
Other services in Cardiff