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The Best Digital Marketing Agencies in London

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The number of digital advertising agencies in the UK has done nothing but grow over the last decade, and the data shows this isn’t going to slow down anytime soon. 2023 has seen a 6.2% increase, with a massive 7,672 digital advertising agencies now available for businesses to choose from. This poses the question: how do I choose an agency that I’m confident will help my business achieve its goals? We also know that employing the services of digital experts comes at a cost, so making the right choice is imperative for a business’ bottom line too.

Choosing a London-based agency

Location is also a factor to consider when choosing an agency, and it will come as no surprise that our beloved capital city is a treasure-trove for digital marketing agencies. If you’re in the market for digital support for your business and specifically want to drill down into what’s available in London, you’re in the right place. We’ve done some of the legwork for you and have highlighted 14 of the best digital marketing agencies in London. We hope to give you an overview of what they offer alongside some of the clients they’ve worked with, so you can decide if they might be a good fit for your business. So without further ado, and in no particular order, here are our best digital marketing agencies in London



Koozai is a full-service digital marketing agency, meaning we cover everything from SEO and content marketing through to paid media, digital PR and website development. We started in 2006, so we’ve had the privilege of watching the digital landscape evolve over that time. We’re an award-winning agency and have worked with clients such as Tui, Stannah, Red Funnel, Victoria and Albert Museum and Cote Brasserie. Our expertise spans across numerous industries including (but not limited to) travel, hospitality, finance, construction, technology, healthcare and e-commerce.

Climb Online

Providing SEO, paid search and social, email and influencer marketing, Climb Online has serviced the likes of, Nue Modern and even TikTok. You can find them in Moorgate and they pride themselves on their ambition, innovation, proactivity and inclusion.

Digital Uncut

Digital Uncut is a good choice for startups looking to meet early-on business objectives. You won’t be overwhelmed with a plethora of overly complicated services, they provide the digital basics – SEO, PPC digital PR, content, web development and graphic design alongside consultancy options. Offering a full-service package is a bonus for smaller companies, as they can take care of everything for you. Previous clients include Mitratech, Just Boilers, Beaufort & Blake and Matterport.


Propeller focus on luxury and high end brands across the hospitality, e-commerce and lifestyle sectors, so definitely a marketing agency to consider if you’re operating in this arena and want to transform your customer experience. They’ve made our list of the best digital marketing agencies in London due to their design capabilities and some of the brands they’ve worked with. Fairline, The Ginger Pig and The Parkgate Hotel are just a handful.

Boat on crystal clear water


Impression is a full-service agency that offers everything from marketing strategy and SEO through to paid social and everything else in between. They’re specialists in B2B, fintech, Saas and sustainable businesses, so if you fit within one of these categories, Impression are worth looking into as an SEO agency. Clients include Vaillant, Topps Tiles and Norse, so likely a better option for larger businesses or SMEs as opposed to smaller, independent businesses.

Business paper

The Good Marketer

Located in Ravey Street, Shoreditch, The Good Marketer has worked on email marketing campaigns for the likes of Flique Cosmetics and The House Outfit, and digital strategy for London Fashion Boutique and Canopy Plants. As a digital marketing company in London they offer their clients social advertising, PPC, SEO, website development, content marketing and digital strategy. This agency is a good one to consider if you’re a smaller business looking for digital support.


Another of our best digital agencies in London is Iconic. A full-service agency providing everything you’d expect plus lead tracking software and branding and creative design services, you can choose from various marketing packages to suit your business. Previous clients include The Hot Tub and Swim Spa Company and Shred-on-site.

Hot tub in the moutains


Having worked with clients such as Under Armour, ParkDean Resorts and Printful, iProspect would be a good fit for larger brands looking to cut through the noise. Their main offerings include SEO, PPC, and affiliate marketing alongside CRO (conversion rate optimisation), content marketing and voice and assistant management. You can find their offices literally all over the world, but their London location is on Triton Street near Regents Park tube station.

Volleyball at sunset

Passion Digital

Located in Brixton, Passion Digital has helped a variety of businesses with their digital marketing KPIs, including Jigsaw, OneTrust, Stashbee and Intuit Quickbooks. As a digital marketing company they offer a variety of organic marketing services including SEO and content marketing, plus web design, CRO and various strategy services.


Having worked with ASICS, better Gyms and Healthspan, lifestyle e-commerce businesses may be interested in finding out more about Re:Signal. Located next to Paddington Station, this London marketing agency is a contender to help brands of all sizes cut through the noise.

Empty gym

Green Light

Analytics, data and audience insights, design and build and paid search and shopping are just a handful of what this London-based agency offers businesses. Green Light is an agency to consider if you’re a bigger fish, as their client roster includes the likes of GHD, GAP and Legal and General, so prices are likely to match.

Mint Twist

Right next to Liverpool Street station is where you’ll find Mint Twist. Offering organic social media marketing alongside PPC, SEO and website development and support, this is a good option for small businesses or SMEs looking for support across a number of digital areas. They’ve worked with brands like Depop, Savoir Beds and Strider Bikes.

Clothes on a rail


Make is a well-known London-based agency. This means they’ve worked alongside some huge companies too, including IBM, Virgin Racing, ClearPay and Lloyds Pharmacy. Make probably isn’t the right agency for SMEs or small businesses/start ups, but is one to consider for bigger budgets.

Pharmacist holding pill

Burst Digital

Focusing on building brands through website development, social media management, email marketing and more, Burst Digital has helped brands such as the Clean Kitchen Club, The Vivienne Westwood Foundation and Nomad all reach their digital marketing objectives.

We hope our list of the best digital marketing agencies in London has helped to kickstart your research process. Remember, if you have any digital-related questions or need some support with your company’s website, get in contact with Koozai today and we’d be more than happy to help.



  1. Hunter avatar

    Thanks for the list !

  2. Giorgio avatar

    An excellent list of ideas both in terms of design and content. I think it’s necessary to never feel like you’ve arrived and always look to great professionals to continuously improve yourself.

    1. Stacey Cavagnetto avatar
      Stacey Cavagnetto

      Hi Giorgio, thank you for your comment, we’re pleased you like the post. Definitely, that’s a great outlook to have for a business.

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Stacey Cavagnetto

Content & PR Lead

With nearly a decade of experience, Stacey is our talented content marketer with a flair for writing and a passion for driving results for her clients. Having worked with exciting brands like Bandai and Srixon and with in-house travel and financial services experience, Stacey is our go-to content guru. In her personal life you’ll find Stacey shooting hoops on the netball court, or binge watching something on Netflix with a cuppa.

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