Top 30 London SEO Agencies

Impression is a multi-award winning, international performance agency with offices in Nottingham and London. Founded in 2012, the agency now employs 60+ high-calibre strategic specialists. Impression works with exciting and ambitious brands from across the globe and their portfolio includes household names like Clarins, Topps Tiles and Cancer Research UK. Their core services include SEO, paid media, digital PR, analytics and CRO. 

Gripped is a marketing and advertising company based in London and founded in 2017. Their team of around 20 employees provides marketing strategy, content marketing, and conversion optimization. 

NinjaPromo was founded in 2017. They have more than 50 employees with its offices spanning across the globe. It stands as a premier digital marketing agency known for its worldwide presence. They specialize in enhancing brands through comprehensive multi-channel marketing strategies. They possess a deep knowledge of various industry principles and are particularly adept at assisting B2B, blockchain, FinTech, software, and rapid-growth start-up brands to navigate the intricate and volatile market landscape.

Lithos Digital is a small SEO agency. Launched in 2014, the team focuses on search engine optimization, content marketing, graphic design, pay per click, and more. The firm is located in Athens, Greece.

Aspectus Group is a midsize branding firm. The New York, New York-based agency was established in 1992. Their services include branding, content marketing, graphic design, marketing strategy, and more.

Flycast Media is a digital marketing company based in Watford, U.K., with a second office in Potters Bar, U.K. Founded in 2009, Flycast Media specializes in providing PPC, web design, and conversion optimization services. 

TopLine Comms is a digital PR and SEO agency headquartered in London. Founded in 2008, they also have a location in Cape Town, South Africa. They have a team of about 17 individuals who specialize in PR, SEO, and content marketing services. Their clients include small to midmarket businesses in IT, education, and financial services.

Re:signal is a marketing agency based in London. Founded in 2012, they have a team of around 15 employees. They primarily provide SEO and content marketing services to midmarket and small businesses. 

Herdl is a PPC company established in 2013. They are in Ashby de la Zouch, United Kingdom and have a small team. Their services include pay per click, search engine optimization, web design, branding, and more.

Creative Brand Design is a small web design company. They specialize in web design, search engine optimization, e-commerce development, graphic design, and more and were launched in 2007.

Climb Online, a pay per click company, is in London,, United Kingdom. The agency specializes in pay per click, search engine optimization, social media marketing, and web design and has a small team.The agency was launched in 2015.

Located in Chelmsford, UK, Absolute Digital Media is a digital marketing agency that was established in 2008. With about 30 employees, Absolute Digital Media specializes in SEO, PPC, social media, content marketing and web design.

Search Logistics is an SEO agency founded in London in 2019 with over 10 professionals. They provide SEO solutions to various clients.

Milestone Media , a small social media marketing company, is based in London, United Kingdom. Founded in 2017, the team focuses on social media marketing, pay per click, email marketing, mobile & app marketing, and more.

GLO - Generate Leads Online is a freelance digital marketing agency based in Ipswich, England. Founded in 2019, the company offers SEO, web design, and PPC services to small businesses. Their SEO services focus on on-site optimization, link earning, and local search.

Wildfire Marketing is an SEO company based in Leeds, United Kingdom, with a secondary office in London, United Kingdom. Founded in 2016, this company has 10 employees. Services provided by Wildfire Marketing include SEO and web design for small to mid-sized businesses.

Footprint Digital is a marketing and advertising agency based in Colchester, United Kingdom, with an additional office in London. Founded in 2012, their team of around 20 employees specializes in PPC, SEO, and conversion optimization.

Digitalhound is an IT services company based in London. The company, founded in 2014, has a team of more than ten that provides, among others, SEO, content marketing, branding, and web design services to the hospitality & leisure, retail, and e-commerce industries. 

Neadoo Digital is an online marketing agency based in London, England, that was established in 2012. Their team of 14 employees offers SEO, web development, PPC, conversion optimization, and content marketing services.

NP Digital is a SEO company established in 2017. Their midsize team is in London, United Kingdom. The company offers search engine optimization, social media marketing, content marketing, email marketing, and more.

Propeller is a web design and development company that was founded in 2000. Headquartered in London, with another office in New York, they have a team of over 55. They specialize in e-commerce development, email marketing, web design, and SEO or clients in the hospitality, leisure, consumer products, and retail industries.

Burst Digital is a web design company in London, United Kingdom. They offer web design, graphic design, web development, digital strategy, and more and were launched in 2018.

E-commerce development company NUOPTIMA is in London, United Kingdom. The firm focuses on e-commerce development, digital strategy, content marketing, email marketing, and more and is small.The firm was established in 2020.

StudioHawk UK is a SEO company launched in 2019. Their small team is in London, United Kingdom. Their services include search engine optimization.

Chameleon Web Services is a digital marketing company located in Birmingham, U.K. The company was founded in 2001 and has a team of fewer than 30 employees that offers SEO and web design services.

Move Digital Ltd is a digital marketing agency based in London. Founded in 2012, their team of around 5 employees specializes in SEO, PPC, and other digital marketing.

Loud Mouth Media is a digital advertising agency based in Belfast, UK with offices in Glasgow, UK, and Dublin, Ireland. Founded in 2011, Loud Mouth Media's team of 15+ employees provides PPC and social media marketing services.

Located in London, UK, Digivate is a digital marketing and SEO agency that specializes in social media advertising, content marketing, SEO, and PPC. Founded in 1988, Digivate works with a variety of clients across industries.

Totally.Tech is a custom software development company founded in 2000. The agency offers custom software development, enterprise app modernization, mobile app development, and application management & support and has a small team. The agency is headquartered in London, United Kingdom.

In London, United Kingdom, Main Menu is a software development firm. The small team offers custom software development, web development, web design, ux/ui design, and more. The agency was launched in 2009.