• Post a Project

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

No have been added yet...

    Pricing Snapshot

    Min. project size $5,000+
    Avg. hourly rate < $25 /hr
    Rating for cost 4.8 /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

    5.0
    • Quality 5.0
    • Schedule 5.0
    • Cost 4.8
    • Willing to Refer 4.9

    Top Mentions

    Review Highlights

    • Versatile Service Offerings

      Clients value Serotonin's ability to provide a range of marketing services, from PPC management to social media content guidance. This versatility makes them a one-stop shop for various marketing needs.

    • 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.

    • Collaborative and Adaptive Approach

      Clients are impressed by Serotonin's collaborative nature and ability to adapt to changing project requirements. Their willingness to consider client ideas and provide honest feedback is appreciated.

    • 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.

    • Strong Communication Skills

      Serotonin is commended for maintaining excellent communication with clients through virtual meetings, emails, and messaging apps. Clients appreciate their responsiveness and the clarity they provide in project updates.

    • 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.

    Serotonin Reviews

    Submit a Review
    All Filters

    0 selected

    Sort by
    Services
    Project cost

    Branding for Mechanical & Electrical Solutions Company

    • Branding Content Marketing Marketing Strategy
    • $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
    • 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
    • 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
    • $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
    • $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
    • Padova, 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.

    Showing 1-9 of 9 Reviews

    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
    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

    Contact Serotonin

    If you’re not seeing exactly what you need here, send this company a custom message. You can talk about your project needs, price, and timeline to get started on your project.

    Connect with Serotonin on Social

    Get connected to see updates from Serotonin like new case studies, latest reviews, their latest masterpieces in their portfolio, delivered straight to you.

    Hybrid Solutions Group LTD

    (1)
    Hybrid Solutions Group LTD Logotype

    Phil McCabe

    Additional Connections

    (2)

    Packages