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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1081

ifour

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Tunbridge Wells, United Kingdom
Ifour is an advertising company. Headquartered in Tunbridge Wells, United Kingdom and Tonbridge, United Kingdom, their small team focuses on advertising, branding, content marketing, search engine optimization, and more. The company was founded in 2006.
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1082

Something Big

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- Woking, United Kingdom
Something Big, an advertising company, was founded in 1998. The company offers advertising, branding, content marketing, search engine optimization, and more and has a midsize team. The company is headquartered in Woking, United Kingdom; Guildford, United Kingdom and Paris, France.
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1083

Parallax

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Parallax is an advertising company based in Leeds, United Kingdom and London, United Kingdom. The small team focuses on advertising, branding, content marketing, search engine optimization, and more and was established in 2009.
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1084

equimedia

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London, United Kingdom
Equimedia, an advertising company, was founded in 1999. The firm offers advertising, branding, content marketing, search engine optimization, and more and has a midsize team.
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1085

Southpaw

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- Tunbridge Wells, United Kingdom
Southpaw is a midsize Tunbridge Wells, United Kingdom-based advertising company. The team specializes in advertising, branding, content marketing, search engine optimization, and more.
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1086

TCC

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Ascot, United Kingdom
Located in Ascot, United Kingdom; Slough, United Kingdom; , and , South Africa, TCC is a small advertising company. They focus on advertising, branding, content marketing, search engine optimization, and more and were established in 1985.
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1087

Ewe Agency

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Ewe Agency is an advertising company. They focus on advertising, branding, content marketing, search engine optimization, and more and were founded in 1990. Their small team is based in Guiseley, United Kingdom and London, United Kingdom.
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1088

Preview

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Burgess Hill, United Kingdom
Headquartered in Burgess Hill, United Kingdom, Preview is a small advertising company. Established in 1994, the team provides advertising, branding, content marketing, search engine optimization, and more.
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1089

Pillory Barn

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Maidstone, United Kingdom
Pillory Barn, an advertising company, is based in Maidstone, United Kingdom and Rochester, United Kingdom. The agency offers advertising, branding, content marketing, search engine optimization, and more and has a small team.The agency was established in 1993.
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1090

adams marketing

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Maidstone, United Kingdom
Adams marketing is an advertising company founded in 1984. The agency offers advertising, branding, content marketing, search engine optimization, and more and has a small team. The agency is headquartered in Maidstone, United Kingdom.
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1091

Advansys

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Wokingham , United Kingdom
Advansys is a small advertising company launched in 2000. Their team provides advertising, branding, content marketing, search engine optimization, and more. The agency is located in Wokingham , United Kingdom and Reading, United Kingdom.
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1092

MOI Global

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- Weybridge, United Kingdom
MOI Global is a Weybridge, United Kingdom-based advertising company. They provide advertising, branding, content marketing, search engine optimization, and more and were founded in 1987.
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1093

Bonfire Creative Intelligence

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Ampthill, United Kingdom
Established in 2000, Bonfire Creative Intelligence is a small advertising company based in Ampthill, United Kingdom and Milton Keynes, United Kingdom. Their services include advertising, branding, content marketing, search engine optimization, and more.
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1094

Rewind FX

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- St. Albans, United Kingdom
Established in 2011, Rewind FX is a SEO services firm. The midsize St. Albans, United Kingdom-based team focuses on search engine optimization, web design, advertising, ux/ui design, and more.
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1095

borne

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London , United Kingdom
Borne, a SEO company, was established in 2011. The firm offers search engine optimization, web design, advertising, ux/ui design, and more and has a small team.
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1096

We Love Digital

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Maidstone, United Kingdom
Small advertising company We Love Digital, is based in Maidstone, United Kingdom and Rochester, United Kingdom. Founded in 2008, the team focuses on advertising, branding, content marketing, search engine optimization, and more.
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1097

de Winter

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Advertising company de Winter was launched in 1989. They are headquartered in Chester, United Kingdom; Liverpool, United Kingdom and London, United Kingdom and have a small team. Their services include advertising, content marketing, marketing strategy, and public relations.
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1098

Bamboo Nine

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Hove , United Kingdom
SEO services firm Bamboo Nine was founded in 2013. They are located in Hove , United Kingdom and Brighton, United Kingdom and have a small team. Their services include search engine optimization, web design, advertising, ux/ui design, and more.
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1099

Equator

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London, United Kingdom
Established in 1999, Equator is a SEO agency. Their midsize team is located in Glasgow, United Kingdom; London, United Kingdom and New York, New York. Their services include search engine optimization, web design, advertising, ux/ui design, and more.
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1100

Toucan_

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
SEO services firm Toucan_ was launched in 1991. Based in London, United Kingdom, their small team focuses on search engine optimization, web design, advertising, ux/ui design, and more.
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1101

Proteus Marketing Communications Ltd

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Proteus Marketing Communications Ltd is a SEO agency. Their small team is in Bristol, United Kingdom and London, United Kingdom. The company focuses on search engine optimization, web design, advertising, ux/ui design, and more. The company was founded in 1991.
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1102

Venture Stream

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Milton Keynes, United Kingdom
Venture Stream is a SEO company. The Tyne and Wear, United Kingdom-based agency was launched in 2012. The small team focuses on search engine optimization, web design, advertising, ux/ui design, and more.
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1103

Progression Design

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Capel, United Kingdom
Progression Design, a small SEO services firm, is located in Capel, United Kingdom. Established in 2011, the team focuses on search engine optimization, web design, advertising, ux/ui design, and more.
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1104

Unseen Studio

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Green Chameleon is a SEO services firm. They are in Bristol, United Kingdom and London, United Kingdom and have a small team. Their services include search engine optimization, web design, advertising, ux/ui design, and more.
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1105

FMI Agency

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Chilton, United Kingdom
FMI Agency is a SEO services firm. Their small team is headquartered in Chilton, United Kingdom and Hemel Hempstead, United Kingdom. Their team provides search engine optimization, web design, advertising, ux/ui design, and more.
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1106

Social Change UK

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Social Change UK is a SEO services firm. Their small team is in Lincoln, United Kingdom and London, United Kingdom. Their services include search engine optimization, web design, advertising, ux/ui design, and more. The agency was founded in 2010.

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1107

Suburb

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Suburb is a SEO services firm based in London, United Kingdom. The small company was founded in 2003. Their team offers search engine optimization, web design, advertising, ux/ui design, and more.
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1108

Jargon PR

(0 Reviews)

Not yet reviewed.
- $5,000+
- 10 - 49 employees
- London, United Kingdom
Jargon PR, a public relations company, was established in 2008. Their small team is based in London, United Kingdom and Reading, United Kingdom. Their services include public relations, content marketing, advertising, branding, and more.
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1109

Gravytrain

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Teddington, United Kingdom
Gravytrain is a small SEO agency. Established in 1999, the company is based in Teddington, United Kingdom; Twickenham, United Kingdom and London, United Kingdom. Their services include search engine optimization, web design, advertising, ux/ui design, and more.
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1110

We Are Ignition

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
We Are Ignition is a SEO company. They are in London, United Kingdom and have a small team that provides search engine optimization, web design, advertising, ux/ui design, and more. The company was established in 2012.
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