872 agencies indexed·Latest entry: 11 September 2026
Home/Agencies/Jellyfish
Jellyfish logo
Listed agency

Jellyfish

London·Network·The Brandtech Group·1000+ Employees·Founded 2005

Jellyfish is an integrated global digital marketing business founded in 2005 and headquartered at The Shard in London. Since June 2023 it has been part of The Brandtech Group, uniting media, creative and data through technology and generative AI.

Are you the agency? Claim the listing to take ownership, edit your details, and enable a clickable link to your site.

About Jellyfish

Jellyfish is a global digital marketing company founded in 2005 by Rob Pierre. Headquartered on Floor 22 of The Shard in London, it employs roughly 2,200 people across around 40 offices spanning the UK, US, EU, APAC and South Africa. The business combines agency services, consultancy, training and technology, uniting media, creative and data through technology and generative AI.

Its service offering spans digital strategy, search (SEO), paid media (PPC and paid social), programmatic display, integrated campaign planning, analytics and conversion optimisation, creative and content production, video production, UX, design and build, email, CRM and organic social. Jellyfish is one of the industry's most certified partners, holding Google Marketing Platform, Google Cloud and Google Analytics certified partnerships, alongside certifications across Salesforce, Amazon and Meta.

In June 2023 The Brandtech Group acquired 100 per cent of Jellyfish in one of the advertising industry's largest digital-marketing transactions.

Find them on

More in London

Other marketing agencies in London you might shortlist alongside Jellyfish.

Browse all London agencies

Healthcare SEO

London · Specialist

The Best Healthcare SEO Agency for Growing Private Clinics. Most SEO agencies treat medical websites like any other business. They don't understand Google's strict medical guidelines, patient search behaviour, or the compliance requirements that can make or break your rankings. You get a specialist team that knows exactly how patients search for private treatments, and more importantly, what makes them choose one clinic over another when they find you online.

KOTA

London · Independent

Situated in the heart of London, KOTA is a distinguished creative web design and branding agency. Our steadfast dedication to delivering visually impressive digital experiences sets us apart. We seamlessly integrate aesthetic appeal with a focus on return on investment, ensuring each project we undertake not only enthralls but also generates revenue. Specialising in strategic brand development and

Blazon Agency

London · Independent

Situated in the heart of Shoreditch, London, Blazon Agency is a distinguished campaign specialist agency. What truly differentiates Blazon is its comprehensive, full-stack methodology, seamlessly incorporating public relations, marketing, and personalised advertising strategy. This unique approach guarantees our clients' products achieve maximum visibility in an increasingly congested market. In a

GA Agency

London · Independent

GA Agency is an award-winning digital marketing agency helping brands all over the world grow their business and revenue in the online space. Our strategy and data-driven approach allow us to build an effective tailor-made digital marketing strategy to take your business to the next level.

RVS Media

London · Specialist

Award-Winning Custom Web & Software Development Company in London, helping businesses across the UK build, scale & innovate with custom websites, software, ecommerce, mobile apps, AI integration & digital transformation services.

Overdrive Digital

London · Independent

The B2B Growth Agency Predictable pipeline growth is a constant challenge for B2B marketing teams. It starts with better MQLs, stronger SQL conversion, and efficient customer acquisition. That’s where Overdrive comes in.