OpenServed

Best Email Marketing Agencies in the United Kingdom (2026) – Ranked by Case Studies

SoproVisit Website →
Write Arm Client-verified
Lead Generation, Email Marketing
Marketing
11-50 Employees
N/A
Brighton, United Kingdom
N/A
  • 1,500+ leads generated through Sopro campaigns
  • Cost per lead of £42 with a 4.3% lead rate
Wooshii Client-verified
Lead Generation, Email Marketing
Media & Broadcasting
51-200 Employees
N/A
London, United Kingdom
N/A
  • 1,813 high-quality leads generated
  • £200,000+ in revenue and 70% ROI, outperforming all other channels
OnIT Client-verified
Lead Generation, Email Marketing
MSP
1-10 Employees
N/A
Heckmondwike, United Kingdom
N/A
  • 4.2% lead rate at around £65 cost per lead
  • First customer signed in six weeks
Innovation VisualVisit Website →
Joseph's Wigs (Email) Client-verified
Email Marketing
Beauty
N/A
N/A
Morden, United Kingdom
N/A
  • +170% revenue increase year over year from segmented emails
  • 53.26% open rate on the fashion segment email
  • 63.08% open rate on the alopecia segment email
Northern MediaVisit Website →
Multi-Turn
Social Media Ads, Email Marketing
Construction
N/A
N/A
Winchester, United Kingdom
N/A
  • £260,000 in new business from developers in 2024
  • £3.5M in new deals influenced by marketing since March 2024
  • £1.3M in won work attributed to marketing
Servaclean
SEO, Email Marketing, Web Development
Manufacturing
N/A
N/A
Bradford, United Kingdom
N/A
  • Organic sessions up 25% over 18 months
  • Monthly web conversions doubled over two years
  • First page ranking for all types of commercial bar design
Reflect DigitalVisit Website →
RSPCA
CRO, Email Marketing
Non Profit
1K-5K Employees
N/A
Horsham, United Kingdom
N/A
  • 192% increase in overall donation revenue
  • 365% increase in campaign conversion rate
  • 313% surge in donations on primary CTA button
  • 14 omnichannel donor touchpoints audited and optimised
New Scientist
Email Marketing, PPC
Media & Broadcasting
51-200 Employees
N/A
London, United Kingdom
N/A
  • 20% subscription renewal rate, exceeding target
Exposure NinjaVisit Website →
Age Care Bathrooms (Email)
Email Marketing
Home Services
11-50 Employees
N/A
Chesterfield, United Kingdom
N/A
  • 529 leads from email
  • 127% growth in email-driven revenue
  • 775% YoY increase in HubSpot leads
CTI DigitalVisit Website →
Drinkaware
SEO, PPC, Email Marketing
Non Profit
11-50 Employees
N/A
London, United Kingdom
N/A
  • +127% conversion rate from paid search
  • 77% open rate on targeted emails
  • +63% overall engagement
MerkleVisit Website →
Currys
Marketing Automation, Personalization, Email Marketing
Retail
10K+ Employees
N/A
London, United Kingdom
N/A
  • 25% decrease in cost to serve messages
  • 3x increase in engagement
  • 33% increase in conversion YoY
  • 167% increase in CRM Revenue YoY
  • Campaign volume increased from 40 to over 200 campaigns
Harvey & HugoVisit Website →
GARDENA
Content Marketing, Email Marketing, Social Media Ads
Home & Garden
N/A
N/A
Newton Aycliffe, United Kingdom
N/A
  • 308,154 consumer newsletter opens across 10 newsletters
  • Combined social media reach of 2,003,808
  • Total social media engagement of 70,139
  • 1,404 new consumer newsletter subscribers
  • Facebook followers up from 2,602 to 5,051
BraftonVisit Website →
Sonia Mooney
Web Design, Email Marketing, Social Media Ads
Professional Services
1-10 Employees
N/A
Brighton, United Kingdom
N/A
  • +44 new web pages
  • +1 fresh email marketing campaign
SmartSitesVisit Website →
Walker and Hawkes
Email Marketing
Retail
1-10 Employees
N/A
West Bromwich, United Kingdom
N/A
  • 208% Increase in conversion rate
  • 7x Return on total spend
100 Pound SocialVisit Website →
Orange Malone
Content Marketing, Email Marketing
Staffing & Recruitment
1-10 Employees
N/A
Sunbury-on-Thames, United Kingdom
N/A
  • 50% newsletter open rate

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