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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241

AB...

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London , United Kingdom
AB... Is a small SEO services firm. Located in Exeter , United Kingdom and London , United Kingdom, the agency was founded in 1983. Their services include search engine optimization, web design, advertising, ux/ui design, and more.
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242

Accelerate

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
SEO services firm Accelerate is headquartered in London, United Kingdom. The small agency was established in 2015. Their team focuses on search engine optimization, web design, advertising, ux/ui design, and more.

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243

Sticky Content

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Westminster, United Kingdom
Sticky Content, a SEO company, was established in 1997. They are based in Westminster, 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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244

Essence

(0 Reviews)

Not yet reviewed.
- $10,000+
- 1,000 - 9,999 employees
- London , United Kingdom
Essence, a large SEO company, is headquartered in London , United Kingdom and New York City, . They provide search engine optimization, web design, advertising, ux/ui design, and more and were founded in 2005.
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245

WILL London

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
WILL London is a SEO agency established in 2012. The small London, United Kingdom-based team offers search engine optimization, web design, advertising, ux/ui design, and more.
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246

Spider

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Spider is a SEO services firm. Launched in 2011, the firm is headquartered in London, United Kingdom. The small team provides search engine optimization, web design, advertising, ux/ui design, and more.
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247

FOX Agency

(0 Reviews)

Not yet reviewed.
- $25,000+
- 50 - 249 employees
- London, United Kingdom
Founded in 2001, FOX Agency is a SEO agency. The firm focuses on search engine optimization, web design, advertising, ux/ui design, and more and has a small team. The firm is in Leeds , United Kingdom and London , United Kingdom.
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248

Mesh Marketing Ltd

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Branding company Mesh Marketing Ltd was launched in 2005. The small London, United Kingdom-based team offers branding, out of home design, direct marketing, advertising, and more.
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249

The Home Agency

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London , United Kingdom
Established in 2002, The Home Agency is a SEO company. Their midsize team is located in Leeds , United Kingdom; London , United Kingdom and Gibraltar, United Kingdom. Their team focuses on search engine optimization, web design, advertising, ux/ui design, and more.
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250

Impero

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London , United Kingdom
Impero is a SEO company. Headquartered in London , United Kingdom, their small team focuses on search engine optimization, web design, advertising, ux/ui design, and more. The company was established in 2009.
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251

RMA Consulting

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London , United Kingdom
RMA Consulting, a SEO agency, was founded in 2005. They are located in London , United Kingdom; Guildford, United Kingdom; New York City, and Washington , and have a midsize team. RMA Consulting specializes in search engine optimization, web design, advertising, ux/ui design, and more.
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252

Pentagram

(0 Reviews)

Not yet reviewed.
- $5,000+
- 250 - 999 employees
- London, United Kingdom
Pentagram is a design studio headquartered in London. They have about 315 employees and additional offices in Berlin, New York, and Austin, Texas. Services include advertising, branding, and design for web, packaging, and graphics. Pentagram's clients are mainly in the arts and entertainment, financial services, business services, government, and consumer products and services sectors.

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Clients
- American Express
Industries
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253

to the point

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
To the point is a SEO agency. The small London, United Kingdom-based firm was launched in 1991. Their team focuses on search engine optimization, web design, advertising, ux/ui design, and more.
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254

McCann Enterprise

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London, United Kingdom
Midsize SEO agency McCann Enterprise, is headquartered in London, United Kingdom. The team focuses on search engine optimization, web design, advertising, ux/ui design, and more.
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255

FleishmanHillard Fishburn

(0 Reviews)

Not yet reviewed.
- $10,000+
- 250 - 999 employees
- London, United Kingdom
FleishmanHillard Fishburn is a midsize SEO agency. They specialize in search engine optimization, web design, advertising, ux/ui design, and more and were launched in 2016.
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256

WAI

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Courtyard, United Kingdom
WAI is a small SEO company launched in 2012. Their team specializes in search engine optimization, web design, advertising, ux/ui design, and more. The firm is located in Courtyard, United Kingdom.
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257

Imperial Leisure

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London , United Kingdom
Headquartered in London , United Kingdom, Imperial Leisure is a small SEO agency. The team provides search engine optimization, web design, advertising, ux/ui design, and more.
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258

Tradedoubler

(0 Reviews)

Not yet reviewed.
- $10,000+
- 250 - 999 employees
- London, United Kingdom
Tradedoubler is a SEO services firm. The midsize London, United Kingdom-based agency was launched in 1999. Their team specializes in search engine optimization, web design, advertising, ux/ui design, and more.
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259

Gravity Thinking

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Gravity Thinking is a SEO services firm. They are in London, United Kingdom and have a small team. Their services include search engine optimization, web design, advertising, ux/ui design, and more. The firm was established in 2007.
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260

The Media Image

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London , United Kingdom
The Media Image is a SEO services firm founded in 2008. The agency provides search engine optimization, web design, advertising, ux/ui design, and more and has a small team. The agency is based in London , United Kingdom.
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261

Evolve Agency

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Evolve Agency is a London, United Kingdom-based SEO agency. The small team provides search engine optimization, web design, advertising, ux/ui design, and more and was launched in 2000.
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262

MediaLab Group

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London , United Kingdom
MediaLab Group is a small London , United Kingdom-based media planning and buying company. They offer media planning & buying, advertising, digital strategy, and search engine optimization and were launched in 1997.
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263

Turnbull Ripley

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London , United Kingdom
Turnbull Ripley is a SEO company established in 1989. The small team provides search engine optimization, web design, advertising, ux/ui design, and more. The agency is located in London , United Kingdom.
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264

B2B International

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London, United Kingdom
B2B International is a SEO agency established in 1998. The midsize London, United Kingdom-based team offers search engine optimization, web design, advertising, ux/ui design, and more.
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265

RAW London

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Small advertising company RAW London, is in London, United Kingdom. Founded in 2011, the team specializes in advertising, branding, social media marketing, and web design.
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266

Emotio Design Group Ltd.

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- Northwood, United Kingdom
Emotio Design Group Ltd. Is a SEO services firm in Northwood, United Kingdom. The small team focuses on search engine optimization, web design, advertising, ux/ui design, and more and was founded in 1989.
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267

Haygarth

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- Wimbledon Village, London, United Kingdom
Haygarth is a SEO company. They are located in Wimbledon Village, London, United Kingdom; Twickenham, United Kingdom; Chicago, and Guildford, United Kingdom and have a midsize team. The firm specializes in search engine optimization, web design, advertising, ux/ui design, and more.
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Clients
- Vodafone
Industries
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268

Greenspace

(0 Reviews)

Not yet reviewed.
- $10,000+
- 10 - 49 employees
- London, United Kingdom
Greenspace is a branding firm. Their small team is in London, United Kingdom and , and offers branding, digital strategy, public relations, and advertising. The firm was established in 2003.
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269

Red Consultancy

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London , United Kingdom
Red Consultancy is a SEO services firm. The midsize London , United Kingdom-based agency was established in 1994. Their services include search engine optimization, web design, advertising, ux/ui design, and more.
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270

BrightSource

(0 Reviews)

Not yet reviewed.
- $10,000+
- 50 - 249 employees
- London , United Kingdom
BrightSource is a SEO agency located in London , United Kingdom and Gloucester, United Kingdom. The midsize team offers search engine optimization, web design, advertising, ux/ui design, and more. The company was established in 2002.
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