Cleaning up the competition: How Sentrex Services tripled enquiries and achieved 34x ROAS
Business: Sentrex Services
Industry: Commercial Cleaning
Location: Manchester, Preston, Stoke-on-Trent, Birmingham and surrounding areas
Services: Bespoke managed PPC services
RESULTS IN 6 MONTHS WITH YELL
📈 £1.7 MILLION IN LEAD VALUE
🔁 34X RETURN ON AD SPEND (ROAS)
📲 ENQUIRIES MORE THAN TRIPLED
🎯 AVERAGE QUOTED LEAD VALUE OF OVER £8,500
👥 HIRING ANOTHER BUSINESS DEVELOPMENT MANAGER TO HANDLE DEMAND
📍 EXPANDING INTO NEW GEO AREAS TO SUPPORT CONTINUED GROWTH
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The challenge
Sentrex Services is a commercial cleaning company operating across Manchester, Preston, Stoke-on-Trent, Birmingham and surrounding areas. They had invested in PPC advertising for over five years — but by the time they came to Yell, confidence in those ads had all but evaporated.
Enquiries were falling. Reporting was opaque. There was no CRM integration, no way to connect clicks to real commercial opportunities, and no clear guidance on where budget was best spent. Worse, a significant portion of inbound leads were irrelevant — job applicants rather than potential clients — wasting the team’s time and distorting the numbers.
Their previous agency wasn’t keeping up with how Google Ads had evolved. No Performance Max campaigns, no tracking of what happened after someone clicked an ad, no meaningful conversation about return on investment.
Director Andrew says: “With Yell, there was no pressure – just clear, honest advice, which made the decision to switch to them feel straightforward.”
“Since Yell took over the account, the results have been exceptional. The quality of the ads improved immediately and, more importantly, the volume of enquiries increased significantly. Within a short period, enquiries more than tripled, to the point where we had to reduce ad spend to manage demand. Even after scaling back, performance remained strong.
What stands out most is how the account is managed day to day. Communication is clear, reporting is easy to follow, and any changes are explained in plain terms. It feels like the account is being actively optimised, rather than left to run in the background.”
thEir solution
How we helped
Yell implemented a bespoke managed PPC strategy across Google and Bing Ads, focused on improving lead quality, tracking real business outcomes, and scaling performance. This included:
- 📣 Fully managed Google & Bing PPC campaigns
- 🔗 Direct Zoho CRM integration to track which leads progressed to real-life quote stage
- 📊 Accurate reporting and ROI tracking based on real commercial opportunities, not vanity metrics
- 🎯 New Performance Max campaigns with optimised creative assets, including video and imagery
- 📉 Ongoing optimisation to reduce poor-quality and irrelevant enquiries
- 🤝 Weekly collaboration, proactive account management, and strategic campaign reviews
By integrating directly with the client’s CRM, Yell could identify which keywords and campaigns were generating genuine revenue opportunities – giving Sentrex full visibility into performance and return on investment for the first time.
“From our first meeting with our account manager Simon, it was clear Yell would be a different experience. Simon was knowledgeable, calm, and transparent about what could be improved and why. There was no pressure, just clear, honest advice, which made the decision to switch feel straightforward.” – Andrew
results & improvements
In just six months, Sentrex Services transformed their PPC performance – generating £1.7 million in quoted lead value and achieving a 34x return on ad spend.
📈 NEARLY £1,800,000 IN QUOTED LEAD VALUE FROM ADS
🔁 34X RETURN ON AD SPEND
📲 ENQUIRIES MORE THAN TRIPLED
🎯 AVERAGE QUOTED LEAD VALUE OF OVER £8,500
📉 DEMAND GREW SO QUICKLY AD SPEND HAD TO BE TEMPORARILY REDUCED
👥 NOW HIRING ANOTHER BUSINESS DEVELOPMENT MANAGER
📍 EXPANDING INTO NEW AREAS TO SUPPORT FURTHER GROWTH
“Switching to Yell has been one of the best marketing decisions we have made. The combination of strong results, clear communication, and a team that genuinely understands PPC has made a measurable difference to our business. We would not hesitate to recommend them.” – Andrew
What their account manager says…
“This campaign showed what’s possible when strong PPC strategy and accurate tracking come together. By integrating directly with the client’s CRM, we could see exactly which keywords were generating real commercial opportunities and optimise around actual business value. The relationship with Sentrex has been brilliant throughout, and the results speak for themselves.”
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Ready to generate more commercial cleaning enquiries?
By partnering with Yell, Sentrex Services tripled enquiries, generated £1.7 million in quoted lead value, and achieved a 34x return on ad spend in just six months.
Book your free marketing audit today and discover how Yell can help grow your commercial cleaning business.
- 50-point marketing MOT
- Tips, advice, and recommendations
- Free copy of our local digital marketing eguide
- Personal Q&A with an expert