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Good things come to those who create

Serotonin is a performance marketing agency for brands that want to perform better, faster.

Founded by Dom Carter & Clair Heaviside; with over a decades of experience scaling brands across the UK, Europe and the US.

  • Min project size
    $5,000+
  • Hourly rate
    < $25 / hr
  • Employees
    10 - 49
  • Locations
    Manchester, England
  • Year founded
    Founded 2019
  • Languages

3 Languages that we service

  • English
  • Spanish
  • Italian

1 Locations

  • Manchester , England

Select Focus Area
Branding Focus
PPC Focus
Industries
Advertising & marketing
100%
Clients
Small Business (<$10M)
50%
Midmarket ($10M - $1B)
35%
Enterprise (>$1B)
15%

Pricing Snapshot

Min. project size $5,000+
Avg. hourly rate < $25 /hr
Rating for cost 4.9 /5

What Clients Have Said

Serotonin offers good value for cost, with clients noting effective project management and timely delivery. Specific pricing details are not disclosed, but feedback highlights their ability to adapt to budgets, particularly for small businesses and charities.

This summary is based on verified Clutch reviews.

Most Common Project Size

< $10,000 based on 5 reviews
< $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000

Select a service to see pricing information

Serotonin Review Insights

Overall Review Rating

4.5
  • Quality 5.0
  • Schedule 5.0
  • Cost 4.9
  • Willing to Refer 4.9

Top Mentions

Review Highlights

  • Expertise in Digital Marketing

    Clients appreciate Serotonin's expertise in managing digital marketing campaigns across various platforms, including Google Ads, Meta ads, and social media. Their ability to tailor strategies to specific business needs is frequently praised.

  • Significant Revenue Growth

    Several reviews highlight Serotonin's ability to significantly increase client revenue, with one client noting an 85% year-over-year increase. This demonstrates the company's effectiveness in achieving financial growth for its clients through strategic marketing efforts.

  • Cultural Fit and Values Alignment

    Several clients chose Serotonin due to cultural fit and shared values, which facilitated smooth collaboration and alignment of business objectives and marketing strategies.

  • Room for Seasonal Strategy Improvement

    One client mentioned a need for Serotonin to be more reactive to seasonal impacts in their business, suggesting an area for potential improvement in strategic planning.

  • Proactive Project Management

    Serotonin's project management skills are noted as a strength, with clients reporting timely deliveries and effective management of complex projects. Their proactive approach is valued by clients who rely on their expertise.

  • Deep Understanding of Client Needs

    Serotonin is praised for taking the time to understand their clients' businesses, aligning their strategies with client goals, and ensuring that marketing efforts are effective and relevant.

Serotonin Reviews

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Services
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Industry
Location

Branding for Mechanical & Electrical Solutions Company

  • Branding Content Marketing Marketing Strategy
  • Brand strategy
    +1
  • $50,000 to $199,999
  • Jan. 2023 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They work hard to understand the businesses they work with and then apply their creative acumen."

Jul 15, 2025
Managing Director, Hybrid Solutions Group
Phil McCabe
Verified
  • Construction
  • Manchester, England
  • 51-200 Employees
  • Online Review
  • Verified

Serotonin has helped a mechanical and electrical solutions company with their rebranding efforts. Their tasks include creating a website, executing content marketing campaigns, and supporting marketing events.

Rebranding & PPC Management Services for Media Agency

  • Branding Pay Per Click
  • Bing Advertising
    +1
  • Confidential
  • Jan. 2023 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"We've worked with Serotonin for several years across many projects and couldn't recommend them higher!"

Jul 4, 2025
Director, Media Agency
Anonymous
Verified
  • Advertising & marketing
  • London, England
  • 11-50 Employees
  • Online Review
  • Verified

Serotonin provides PPC management and rebranding services for a media agency. The team is responsible for conducting Google Ads research, executing copywriting, and supporting ad design.

SMM Services for Hotel Company

  • Content Marketing Marketing Strategy Social Media Marketing
  • Less than $10,000
  • Mar. 2025 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They're a one-stop shop."

Jul 2, 2025
Social Media Manager, Warner Hotels
Nicole Read
Verified
  • Hospitality & leisure
  • Hemel Hempstead, England
  • 5,001-10,000 Employees
  • Online Review
  • Verified

Serotonin has been hired by a hotel company to help with their organic social media reporting. The team has shared best practices and provided insights on publishing trends and social media content.

PPC Services & Demand Generation Marketing for Art School

  • Demand Generation Marketing Pay Per Click
  • Google Adwords
    +1
  • Confidential
  • Aug. 2024 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Decisions are made within our partnership, which is extremely important to us."

Jul 1, 2025
Marketing Manager, Art School
Lucy Turvey
Verified
  • Arts, entertainment & music
  • United Kingdom
  • 11-50 Employees
  • Online Review
  • Verified

An art school has hired Serotonin to serve as an extension of their marketing team. The team has created a robust paid media strategy that includes Meta Ads, Google Ads, and demand generation services.

PPC for Lawn Care Products Company

  • Pay Per Click
  • Confidential
  • Nov. 2024 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They respond quickly and provide good strategies to meet our goals."

Sep 3, 2025
Owner, Lawn Care Products Company
Anonymous
Verified
  • eCommerce
  • Manchester, England
  • 1-10 Employees
  • Online Review
  • Verified

Serotonin provides ongoing PPC services for a lawn care products company. The team is responsible for launching Google Ads campaigns.

Meta Ads Management for Soap Company

  • Advertising
  • Less than $10,000
  • June 2025 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They have a deep marketing understanding that positions them as true business consultants."

Aug 5, 2025
Co-Founder, NOWATA
Rus
Verified
  • Other industries
  • Hartford, Connecticut
  • 1-10 Employees
  • Online Review
  • Verified

Serotonin provides Meta ads management for a soap company. The team handles audience targeting, ad creative development, A/B testing, performance monitoring, and Facebook Pixel setup.

Website Development for Restaurant Group

  • Search Engine Optimization Web Development
  • Copywriting
    +2
  • $10,000 to $49,999
  • June 2023 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
4.0
Willing to Refer
4.0

"Their flexibility and understanding of working within budgets have impressed us."

Jul 6, 2025
Director, Deckhouse
Anonymous
  • Other industries
  • Taunton, England
  • 51-200 Employees
  • Online Review

Serotonin has developed multiple websites for a restaurant group. They've designed a great customer journey and set up SEO.

Digital Strategy, Web Design & PPC for Bicycle Frames Co

  • Digital Strategy Pay Per Click Web Design
  • Google Adwords
    +1
  • $50,000 to $199,999
  • Mar. 2024 - July 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"A service mindset was embedded into the company culture."

Jul 4, 2025
Managing Director, SWI Cycling
William Fraser
Verified
  • Sports
  • Padua, Italy
  • 1-10 Employees
  • Online Review
  • Verified

Serotonin provided web design, PPC, and digital strategy services for a bicycle frame manufacturer. The team focused on increasing the client's reach, website traffic, and conversions.

Paid Media Management Services for Restaurant

  • Advertising
  • Other advertising
    +3
  • Confidential
  • Mar. 2024 - Ongoing
0.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"They couldnt be more helpful and positive about the work together."
Jun 30, 2025
Marketing Director, Bella Italia
Megan Trimble
  • Food & Beverage
  • United Kingdom
  • 5,001-10,000 Employees
  • Online Review

Serotonin managed a casual dining restaurant's paid media campaigns. This included paid social media, out-of-home (OOH), radio, and programmatic display ads.

Showing 1-10 of 10 Reviews

Packages we offer:

Paid Media Management

Direct in-platform management, planning & delivery of Paid Search (Google & Bing Ads), Paid Social (Meta, Facebook, Instagram, TikTok, Twitter, LinkedIn + more), Programmatic Display and DOOH.

Small

Brands spending under $15,000 pcm on ads

$2,000 /total
  • Monthly Reforecasts
  • Weekly Performance Meetings

Large

Brands spending $100,000 < pcm on ads

$8,000 /total
  • Monthly Reforecasts
  • Weekly PDF Report
  • Weekly Performance Meetings
  • 12 Month Channel Forecast
  • Fortnight Strategy Director Call
Features

Small

$2,000

/total

Medium

$5,000

/total

Large

$8,000

/total

Monthly Reforecasts

Weekly PDF Report

Weekly Performance Meetings

12 Month Channel Forecast

Fortnight Strategy Director Call

Bespoke Real Time Dashboard

Creative Studio Time

Small

$2,000

/total

Monthly Reforecasts

Weekly PDF Report

Weekly Performance Meetings

12 Month Channel Forecast

Fortnight Strategy Director Call

Bespoke Real Time Dashboard

Creative Studio Time

Medium

$5,000

/total

Monthly Reforecasts

Weekly PDF Report

Weekly Performance Meetings

12 Month Channel Forecast

Fortnight Strategy Director Call

Bespoke Real Time Dashboard

Creative Studio Time

Large

$8,000

/total

Monthly Reforecasts

Weekly PDF Report

Weekly Performance Meetings

12 Month Channel Forecast

Fortnight Strategy Director Call

Bespoke Real Time Dashboard

Creative Studio Time

Clutch verification provides an additional layer of data to help you make the right purchasing decision of business services.

Learn More
Verified Client Reviews
8
Overall Review Rating
4.5
Source
Clutch
Last Updated
September 23, 2025

Business Entity

Business Entity Name Serotonin Digital Ltd
Source Companies House
Jurisdiction of Formation United Kingdom
Date of Formation April 23, 2019
Status Active
Last Updated July 3, 2025
ID 11956943

Credit Report Results

International Credit Risk Assessment Low Risk
Source Creditsafe
Last Updated July 3, 2025
Learn More About The Clutch Verification Process

Locations (1)

25 Dale Street ManchesterEngland M1 1EA

31 - 40

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Hybrid Solutions Group LTD

(1)
Hybrid Solutions Group LTD Logotype

Phil McCabe

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