Social Media Advertising agencies in London.
Social Media Advertising is paid placement on Meta (Facebook, Instagram), TikTok, LinkedIn, X, Pinterest, and Snapchat. Scope typically covers strategy, audience targeting, creative production, campaign setup, bid management, attribution, and reporting. It is the paid side of social, distinct from Social Media Marketing which covers organic content, community management, and influencer relations. This page shows every agency on AgencyIndex offering social media advertising in London.
- 37 UK agencies offering social media advertising in London
- Part of the Social Media Advertising service set
- Indexed in London
- Reviewed 17 May 2026
Leo Burnett is a London-based agency delivering an extensive suite of services, such as activations, design, film production, influencer collaboration, social media management, and sponsorship opportunities. Their fundamental offerings centre on crafting captivating brand narratives and experiences that engage audiences across numerous channels. The unique selling point of Leo Burnett lies in thei
CMI Media Group, a London-based agency, specialises in strategic healthcare marketing services that are comprehensive and targeted. Our primary service offerings encompass strategic planning, SEM and SEO, social media management, data analytics, and technology consultation, all specifically tailored for the healthcare sector. Our unique value proposition is defined by our proprietary tools, Evolve
Spark Foundry, a London-based agency, delivers an extensive assortment of media and marketing solutions, tailored to expedite business expansion. They specialise in areas such as media strategising and procurement, data and technological innovation, analytics and insights, e-commerce, CRM, consumer marketing, and marketplace intelligence. Spark Foundry's unique selling point is their proficiency i
Saatchi & Saatchi, a prominent agency based in London, specialises in providing inventive marketing and advertising services. They excel in crafting compelling campaigns for renowned brands such as Waitrose, John Lewis, and EE, with a primary focus on narrative-driven consumer engagement. The agency's unique selling point centres on their dedication to inclusivity within the industry, demonstrated
Wavemaker UK, a London-based agency, provides an extensive suite of media, content and technology services aimed at enhancing business performance. Key services encompass media procurement and planning, content production and distribution, as well as development of data-driven strategies. Wavemaker's unique selling point lies in their fusion of breakthrough technology and consumer insights to yiel
Mindshare, a London-based agency, specialises in integrated media services with a keen emphasis on performance-oriented marketing. This agency expertly combines analytics, insights, and creativity to craft high-impact campaigns that resonate with audiences across various channels. Key to Mindshare's proficiency is their adept handling of media planning, purchasing, and optimisation, which aids bra
A8om is a London-based full-service digital marketing agency that specializes in SEO, PPC, brand identity, website development, and more. With a team of creative strategists and technical experts, they have helped businesses of all sizes, from startups to large enterprises, enhance their digital presence and drive revenue growth. Drawing from years of industry experience, A8om uses data-driven met
Axcess Web is one of London's top digital marketing agencies, known for its effective approach and great results. With over 7 years of experience, they create customised strategies that help businesses grow. They prioritise transparency, innovation, and customer satisfaction, consistently surpassing expectations. Their team of over 100 experts excels in the latest techniques in SEO, PPC, social me
As a powerhouse of digital strategy, Mobikasa is composed of an assorted mix of strategists, creators, developers, scribes, directors, and producers, united by a cutting-edge philosophy. This multifaceted team collaboratively engineers pioneering digital solutions that resonate with global audiences. With an industry tenure exceeding a decade, Mobikasa's designs, underpinned by scientific insight,
Climb Online is a forward-focused marketing agency dedicated to empowering the next generation of global brands. Following its acquisition by global digital group xDNA in 2022, the agency continues to champion ambition, innovation, proactivity, and inclusivity, equipping clients with a competitive edge in a constantly evolving marketplace. Operating from offices in London, Glasgow, Manila, and Per
Pattrns is a London-based digital marketing agency, extending its services to Nashville and Dubai. Our agency specialises in a wide range of digital marketing solutions, encompassing SEO, paid search, and social media management, with a dedicated emphasis on platforms such as TikTok, Google, and Shopify. Recognised for our data-centric approach, Pattrns leverages advanced AI and machine learning t
Gravity Road is a London-based creative and digital innovation studio founded in 2011, now part of The Brandtech Group. It produces culture-led, social-first and AI-native creative work for major global brands.
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.
AgencyIndex tracks 37 social media advertising agencies in London. The list above is filtered to that intersection and ordered with verified and featured listings first.
For the wider editor's view on social media advertising agencies in the UK, see the social media advertising service brief. For context on London's marketing cluster, see the London location brief. The pricing, timeline and red-flag notes below apply to social media advertising as a discipline; they do not change materially in London.
Single-platform boutique £400-1,500 · Mid-market £1,500-3,500 · Full multi-platform £3,500-5,000+. Hybrid models pair a £750-1,500 base with 10-15% above an agreed threshold. LinkedIn B2B sits at the top of the range due to higher CPMs.
1-5 days audit + tracking · 3-14 days creative production · 1-3 days launch · 7-21 days learning phase · 2-4 weeks meaningful read on Meta and TikTok, 3-6 weeks on LinkedIn.
- · No in-house creative production - paid social is creative-led, weak throughput means slow learning
- · Percentage-of-spend pricing with no committed monthly creative quota or testing cadence
- · Avoids discussing iOS privacy, signal loss, Conversions API, or modeled conversions
- · Cannot explain platform attribution windows vs GA4 or CRM, or how they reconcile the gap
- · No first-party data integration - no CAPI, no Customer Match, no offline conversion imports
- · Refuses to give the brand admin access to its own Meta Business Manager, TikTok account, or LinkedIn Campaign Manager
Social Media Advertising agencies in other cities.
Other services in London.
What brands ask about social media advertising agencies.
The 5 questions our editors get most often, answered honestly. These apply to social media advertising as a discipline regardless of city.