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 May 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 provider
- SmartSites
  (218 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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451

markettiers

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 50 - 249 employees
- London, United Kingdom
Midsize advertising company markettiers, is based in London, United Kingdom and Manchester, United Kingdom. They focus on advertising, public relations, and video production and were launched in 1994.
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452

Mediatel Limited

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 50 - 249 employees
- London , United Kingdom
Mediatel Limited is an advertising company. Founded in 1981, the midsize company is located in London , United Kingdom. Their team specializes in advertising, marketing strategy, and video production.
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453

Car Quids

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 10 - 49 employees
- London, United Kingdom
Founded in 2014, Car Quids is an advertising company. Headquartered in London, United Kingdom, their small team offers advertising, branding, and marketing strategy.
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454

Forever Audio

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 50 - 249 employees
- London, United Kingdom
SNK Studios is an advertising company. Established in 2004, the team offers advertising and marketing strategy. Their small company is headquartered in London, United Kingdom.
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455

Fix Media

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 10 - 49 employees
- London, United Kingdom
Fix Media is an advertising company. The London, United Kingdom-based company was founded in 2015. The small team specializes in advertising and marketing strategy.
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456

We are Vista

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 250 - 999 employees
- London, United Kingdom
Advertising company We are Vista is headquartered in London, United Kingdom and Leeds, United Kingdom. The midsize team focuses on advertising, marketing strategy, and video production. The firm was founded in 1996.
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457

westmas

(0 Reviews)

Not yet reviewed.
- $5,000+
- 10 - 49 employees
- Croydon, United Kingdom
Small SEO company westmas, is in Croydon, United Kingdom and , United Kingdom. The team offers search engine optimization, social media marketing, advertising, and content marketing.
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458

White Spider Media

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 10 - 49 employees
- London, United Kingdom
White Spider Media is a media planning & buying company. The small London, United Kingdom-based company was launched in 2005. Their team provides media planning & buying, advertising, and print design.
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459

Capital City Media Ltd

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 2 - 9 employees
- London, United Kingdom
Capital City Media Ltd, a media planning and buying company, was launched in 1990. Located in London, United Kingdom, their small team provides media planning & buying, advertising, and market research.
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460

brand-links

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 2 - 9 employees
- London, United Kingdom
Launched in 1998, brand-links is a media planning & buying agency. They are in London, United Kingdom and have a small team. Their services include media planning & buying, advertising, and social media marketing.
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461

Siren Design

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 10 - 49 employees
- London, United Kingdom
Siren Design is a graphic design company. Their small team is headquartered in London, United Kingdom and specializes in graphic design, advertising, and branding. The firm was founded in 2008.
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462

Make Happy

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 2 - 9 employees
- London, United Kingdom
Make Happy is a small marketing strategy company. Headquartered in London, United Kingdom, the company was founded in 2010. Their team offers marketing strategy, HR services, advertising, and market research.
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463

iotec Global

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 10 - 49 employees
- London, United Kingdom
Iotec Global is an advertising company. They specialize in advertising, Artificial Intelligence, branding, media planning & buying, and more and were established in 2013. Their small team is London, United Kingdom-based.
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464

Branding for business

(0 Reviews)

Not yet reviewed.
- $1,000+
- 2 - 9 employees
- London, United Kingdom
Branding for business is a SEO agency located in London, United Kingdom. The small team focuses on search engine optimization, advertising, branding, digital strategy, and more. The agency was established in 2012.
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465

MullenLowe Profero

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 250 - 999 employees
- London, United Kingdom
Advertising company MullenLowe Profero was founded in 1998. Headquartered in London, United Kingdom, their midsize team focuses on advertising, branding, content marketing, media planning & buying, and more.
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466

UNIT9

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 50 - 249 employees
- London, United Kingdom
UNIT9 is an advertising company. Launched in 1996, the team provides advertising, AR/VR development, marketing strategy, product design, and more. Their midsize firm is headquartered in London, United Kingdom.
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467

Global

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 1,000 - 9,999 employees
- London, United Kingdom
Global is an advertising and marketing strategy company. They are in London, United Kingdom and have a large team. The firm offers advertising and marketing strategy.
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468

Absolute Radio

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 50 - 249 employees
- London, United Kingdom
Advertising and marketing strategy company Absolute Radio is headquartered in London, United Kingdom. Established in 2008, the midsize team provides advertising and marketing strategy.
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469

MJ Media

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 50 - 249 employees
- London, United Kingdom
In London, United Kingdom, MJ Media is an advertising and media planning & buying company. The midsize team offers advertising and media planning & buying. The firm was established in 1997.
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470

Advertising Standards Authority

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 50 - 249 employees
- London, United Kingdom
Advertising Standards Authority is a midsize advertising and media planning and buying company founded in 1962. Their services include advertising and media planning & buying. The company is based in London, United Kingdom.
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471

Zappi

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 50 - 249 employees
- London, United Kingdom
Zappi is a market research company. The midsize team is headquartered in London, United Kingdom. Their services include market research and advertising.
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472

Web Agency - Marketing Agency - Kenya

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 10 - 49 employees
- London, United Kingdom
In Nairobi, Kenya; London, United Kingdom and Grand Baie, Mauritius, Web Agency - Marketing Agency - Kenya is a small advertising company. Their services include advertising, branding, conversion optimization, digital strategy, and more.
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473

AKR SEO Agency

(0 Reviews)

Not yet reviewed.
- $1,000+
- 2 - 9 employees
- London, United Kingdom
AKR SEO Agency, a small SEO services firm, is headquartered in London, United Kingdom. Their services include search engine optimization, web design, advertising, branding, and more.
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474

Caspia Consultancy Ltd

(0 Reviews)

Not yet reviewed.
- $5,000+
- 2 - 9 employees
- London, United Kingdom
Caspia Consultancy Ltd is an advertising company. They offer advertising, branding, email marketing, media planning & buying, and more and were founded in 2002. Their small team is London, United Kingdom-based.
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475

KAU Media Group

(0 Reviews)

Not yet reviewed.
- $5,000+
- 10 - 49 employees
- London, United Kingdom
Pay per click agency KAU Media Group was established in 2015. They are based in London, United Kingdom and have a small team. KAU Media Group offers pay per click, search engine optimization, advertising, digital strategy, and more.
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476

Axonn Media

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 10 - 49 employees
- Here East, United Kingdom
Axonn Media is an advertising company. Their small team is in Here East, United Kingdom and Manchester, United Kingdom. Their services include advertising, content marketing, email marketing, graphic design, and more.

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477

London Calling Arts

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 10 - 49 employees
- London, United Kingdom
London Calling Arts, an advertising company, was launched in 1980. In London, United Kingdom and Manchester, United Kingdom, their small team focuses on advertising, email marketing, marketing strategy, print design, and more.
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478

Sister London

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 10 - 49 employees
- England, United Kingdom
Founded in 1999, Sister London is an advertising company. Their small team is located in England, United Kingdom and specializes in advertising, content marketing, graphic design, public relations, and more.
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479

Top Media Advertising

(0 Reviews)

Not yet reviewed.
- $1,000+
- 2 - 9 employees
- London, United Kingdom
Advertising company Top Media Advertising is based in London, United Kingdom. The small firm was launched in 2018. Their services include advertising, media planning & buying, digital strategy, conversion optimization, and more.
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480

MCCGLC

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 50 - 249 employees
- London, United Kingdom
MCCGLC is an advertising company founded in 2005. Their midsize team is in Wilmington, Delaware and London, United Kingdom and provides advertising, branding, digital strategy, marketing strategy, and more.
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