What are advertising agencies?

An advertising agency is a company that’s dedicated to assisting clients research, set up, and execute target advertising campaigns. These campaigns may include print ads, social media ads, paid search advertising, television ads, and more.

How do ad agencies get paid?

Top advertising agencies may have different ways of charging clients. Some may ask for a monthly retainer for ongoing account upkeep. Additionally, some firms could request to be paid a percentage of the ROI generated through the ads they create.

How can advertising agencies help my business?

Advertising agencies can help businesses educate their customers on their products and services. With an advertising partner, businesses can create memorable, measurable, and compelling strategies or campaigns. Advertising agencies also enable businesses to increase customer reach and build better brand awareness. By investing in advertising, businesses have a greater chance of gaining an advantage over their competitors.

What kind of ROI (return on investment) should I expect when hiring an advertising agency?

Businesses should anticipate seeing a tangible return on their investment when partnering with an advertising agency if the right measures and resources are implemented. Businesses should monitor key performance indicators (KPIs) such as customer acquisition cost (CAC), revenue growth, and return on ad spend (ROAS). Typically, these metrics don’t appear instantaneously after a campaign ends but rather after a few weeks or months.

Top 100 Advertising Agencies in London

The Best of April 2024

Advertising is crucial to educating consumers and promoting products or services. You can generate interest and give deeper insights into your brand if done correctly.

Jump to Most Reviewed Companies

List of the Best London Advertising Companies

Featured providers
- SmartSites
  (214 Reviews) 4.9
  - Timeliness
    4.9
  - Service Excellence
    4.9
  - Value
    4.8
  - Would Recommend
    4.9
  - $1,000+
  - 250 - 999 employees
  - Paramus, NJ
  SmartSites is a full-service digital agency located in Paramus, N.J. Founded in 2011, SmartSites has a team of nearly 100 designers, writers, developers, marketers, and problem solvers who work tirelessly to make websites successful. SmartSites offers its clients creative ways to build, plan, and promote their website. They focus on web design, PPC marketing, and organic SEO.
  
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361

Omnicom

(0 Reviews)

Not yet reviewed.
- $5,000+
- 10,000+ employees
- London, United Kingdom
Omnicom is a large branding company. Established in 1986, the team provides branding, CRM consulting and SI, digital strategy, public relations, and more. The firm is located in New York, New York; London, United Kingdom and Chicago, Illinois.

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362

Theobald Fox

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Farringdon , United Kingdom
Theobald Fox is a SEO agency. Their small team is based in Farringdon , United Kingdom. The firm focuses on search engine optimization, web design, advertising, ux/ui design, and more. The firm was established in 2008.
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363

Inbound360

(0 Reviews)

Not yet reviewed.
- $10,000+
- 2 - 9 employees
- London, United Kingdom
Inbound360 is an advertising company in London, United Kingdom. They offer advertising, pay per click, conversion optimization, and social media marketing and were established in 2013.
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364

Fresh Montgomery

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Marylebone, United Kingdom
Advertising company Fresh Montgomery is based in Marylebone, United Kingdom. They offer advertising, content marketing, and social media marketing and were launched in 1999.
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365

ITN Productions

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London , United Kingdom
ITN Productions, a midsize SEO agency, is in London , United Kingdom. Their services include search engine optimization, web design, advertising, ux/ui design, and more.
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366

Synergy

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London, United Kingdom
Synergy is a SEO company. The midsize London, United Kingdom-based team focuses on search engine optimization, web design, advertising, ux/ui design, and more. The agency was established in 1984.
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367

Pulse Group

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London, United Kingdom
Pulse Group is an advertising company established in 1983. The agency focuses on advertising, branding, content marketing, digital strategy, and more and has a midsize team.
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368

Forever Beta

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London, United Kingdom
Forever Beta is an advertising company headquartered in London, United Kingdom; Brooklyn, New York and Manchester, United Kingdom. The midsize agency was launched in 2010. Their services include advertising, branding, marketing strategy, mobile app development, and more.
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369

DewGibbons + Partners

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
DewGibbons + Partners is a SEO agency founded in 1997. Their small team is based in London, United Kingdom and specializes in search engine optimization, web design, advertising, ux/ui design, and more.
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370

Mention Me

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London, United Kingdom
Mention Me, a midsize advertising company, is based in London, United Kingdom. They focus on advertising, digital strategy, marketing strategy, and social media marketing and were founded in 2012.
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371

Hotcow

(0 Reviews)

Not yet reviewed.
- $10,000+
- 2 - 9 employees
- Hammersmith, United Kingdom
Hotcow is an advertising company. Their small team is located in Hammersmith, United Kingdom. The agency provides advertising, CRM consulting and SI, public relations, social media marketing, and more. The agency was founded in 2006.
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372

Sunday

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London, United Kingdom
Sunday is an advertising company founded in 2005. Located in London, United Kingdom, their midsize team specializes in advertising, content marketing, other marketing, social media marketing, and more.
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373

Good Relations

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London, United Kingdom
Good Relations, a content marketing company, is headquartered in London, United Kingdom and Redding, . The midsize firm was established in 1961. Their team focuses on content marketing, graphic design, public relations, advertising, and more.
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374

Be-Hookd Digital

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Headquartered in London, United Kingdom, Be-Hookd Digital is a branding company. The small firm was founded in 2013. Their team provides branding, social media marketing, web development, advertising, and more.
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375

Kemosabe

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 10 - 49 employees
- London, United Kingdom
Kemosabe is an advertising company. Launched in 2016, the small agency is located in London, United Kingdom. Their team focuses on advertising, branding, content marketing, marketing strategy, and more.
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376

Dog Digital

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London, United Kingdom
Dog Digital is an advertising company launched in 1996. They are located in , ; Glasgow, United Kingdom; Edinburgh, United Kingdom and Motherwell, United Kingdom and have a midsize team. The firm focuses on advertising, ux/ui design, branding, content marketing, and more.

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377

Velvet PR

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Founded in 2010, Velvet PR is an advertising company. Their small team is headquartered in London, United Kingdom. Their services include advertising, branding, marketing strategy, public relations, and more.
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378

Initials

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London, United Kingdom
Located in London, United Kingdom, Initials is an advertising company. The midsize firm was founded in 2006. Their team offers advertising, branding, digital strategy, social media marketing, and more.
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379

Rosie Lee

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Rosie Lee, an advertising company, was established in 2001. The small London, United Kingdom-based team specializes in advertising, branding, digital strategy, content marketing, and more.

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380

Founded

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London , United Kingdom
Founded is an advertising company based in London , United Kingdom and San Francisco, California. The agency specializes in advertising, branding, public relations, and social media marketing and has a midsize team.The agency was founded in 2012.
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381

The Goat Agency

(0 Reviews)

Not yet reviewed.
- $50,000+
- 50 - 249 employees
- London, United Kingdom
Midsize other marketing company The Goat Agency, is in London, United Kingdom. Launched in 2015, the team offers other marketing, advertising, digital strategy, event marketing & planning, and more.
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382

Avantgarde London

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Avantgarde London is an advertising company in London, United Kingdom. The small team focuses on advertising, branding, marketing strategy, and video production and was launched in 2007.
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383

Them London

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Chiswick, United Kingdom
Founded in 1995, Them London is an advertising company. Their small team is headquartered in Chiswick, United Kingdom. Their team provides advertising, web development, branding, content marketing, and more.
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384

Assembly Studios

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Established in 2009, Assembly Studios is a SEO services firm. Their small team is located in London, United Kingdom. Their team focuses on search engine optimization, web design, advertising, ux/ui design, and more.
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385

Altair Media

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Altair Media is a small London, United Kingdom-based SEO agency. They specialize in search engine optimization, direct marketing, advertising, branding, and more and were launched in 2014.
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386

RadioWorks

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Fitzrovia , United Kingdom
RadioWorks is an advertising and public relations agency established in 1990. Their small team is based in Fitzrovia , United Kingdom and Carlisle, United Kingdom and specializes in advertising and public relations.
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387

Kingsland Linassi

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Kingsland Linassi is a London, United Kingdom-based SEO services firm. Launched in 2008, the small team offers search engine optimization, web design, advertising, ux/ui design, and more.
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388

Audience2Media

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Audience2Media, an advertising company, is in London, United Kingdom and Kuala Lumpur, Malaysia. The firm offers advertising, social media marketing, broadcast video, voice services, and more and has a small team.The firm was founded in 2009.
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389

Portas

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Branding company Portas was founded in 1997. They are in London, United Kingdom and have a small team. Portas specializes in branding, advertising, content marketing, marketing strategy, and more.
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390

nude

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Digital strategy company nude was launched in 2003. In London, United Kingdom, their small team specializes in digital strategy, marketing strategy, direct marketing, advertising, and more.
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