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 September 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
  (258 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.
  
  Read More
  Industries
  View Profile Visit Site
1141

The Minimart

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Soho, England
The Minimart, a small advertising company, is in Soho, United Kingdom. They specialize in advertising, branding, marketing strategy, social media marketing, and more and were founded in 2003.
Read More
Industries
View Profile Visit Site
Get connected with a company for free

Tell us about your project, and we'll match you with vetted companies that meet your requirements.

Get Started
1142

Hometown London

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, England
Hometown London is a small branding firm. The London, United Kingdom-based company was launched in 2012. Their services include branding, marketing strategy, social media marketing, advertising, and more.
Read More
Industries
View Profile Visit Site
1143

Martin Agency

(0 Reviews)

Not yet reviewed.
- $10,000+
- 250 - 999 employees
- London, England
Martin Agency is a full-service digital agency with offices in New York, London, and Richmond, Va. The agency has accumulated a team of over 500 employees. Martin Agency has been specializing in web design, social media marketing, and digital strategy since it was founded in 1965. Enterprise-level clients include prestigious companies across the restaurant, finance, and insurance industries.

Read More
Clients
- Discover Card
Industries
View Profile Visit Site
1144

r//evolution marketing

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Abbott's Hill, England
R//evolution marketing is an advertising company. The small Abbott's Hill, United Kingdom-based firm was established in 2002. Their team provides advertising, branding, content marketing, search engine optimization, and more.
Read More
Industries
View Profile Visit Site
1145

BWP Group Ltd

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- Marlow, England
BWP Group Ltd, an advertising company, is headquartered in Marlow, United Kingdom; Slough, United Kingdom; London, United Kingdom and Hemel Hempstead, United Kingdom. The midsize team provides advertising, branding, content marketing, search engine optimization, and more. The company was founded in 1995.
Read More
Industries
View Profile Visit Site
1146

Inside Online Marketing Limited

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, England
Inside Online Marketing Limited, an advertising company, was established in 2009. Their small team is in Chester, United Kingdom and London, United Kingdom. The agency provides advertising, branding, content marketing, search engine optimization, and more.
Read More
Industries
View Profile Visit Site
1147

Addition+

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, England
Addition+ is a small London, United Kingdom-based advertising company. Their services include advertising, branding, content marketing, search engine optimization, and more.
Read More

View Profile Visit Site
1148

ifour

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Tunbridge Wells, England
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.
Read More
Industries
View Profile Visit Site
1149

Something Big

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- Woking, England
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.
Read More
Industries
View Profile Visit Site
1150

Parallax

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, England
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.
Read More
Industries
View Profile Visit Site
1151

equimedia

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London, England
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.
Read More
Industries
View Profile Visit Site
1152

Southpaw

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- Tunbridge Wells, England
Southpaw is a midsize Tunbridge Wells, United Kingdom-based advertising company. The team specializes in advertising, branding, content marketing, search engine optimization, and more.
Read More
Industries
View Profile Visit Site
1153

TCC

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Ascot, England
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.
Read More
Industries
View Profile Visit Site
1154

Ewe Agency

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, England
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.
Read More
Industries
View Profile Visit Site
1155

Preview

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Burgess Hill, England
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.
Read More
Industries
View Profile Visit Site
1156

Pillory Barn

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Maidstone, England
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.
Read More
Industries
View Profile Visit Site
1157

adams marketing

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Maidstone, England
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.
Read More
Industries
View Profile Visit Site
1158

Advansys

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Wokingham , England
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.
Read More
Industries
View Profile Visit Site
1159

MOI Global

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- Weybridge, England
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.
Read More
Industries
View Profile Visit Site
1160

Bonfire Creative Intelligence

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Ampthill, England
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.
Read More
Industries
View Profile Visit Site
1161

Rewind FX

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- St. Albans, England
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.
Read More
Industries
View Profile Visit Site
1162

borne

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London , England
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.
Read More
Industries
View Profile Visit Site
1163

We Love Digital

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Maidstone, England
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.
Read More
Industries
View Profile Visit Site
1164

de Winter

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, England
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.
Read More
Industries
View Profile Visit Site
1165

Bamboo Nine

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Hove , England
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.
Read More
Industries
View Profile Visit Site
1166

Equator

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London, England
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.
Read More
Industries
View Profile Visit Site
1167

Proteus Marketing Communications Ltd

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, England
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.
Read More
Industries
View Profile Visit Site
1168

Venture Stream

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Milton Keynes, England
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.
Read More
Industries
View Profile Visit Site
1169

Progression Design

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Capel, England
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.
Read More
Industries
View Profile Visit Site
1170

Unseen Studio

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, England
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.
Read More
Industries
View Profile Visit Site