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Business Details
36 Years
experience
Your Trusted B2B Sales Development Partner in Birmingham
Established in 1990, GCL has built a reputation as a trusted partner for B2B organisations seeking to enhance their sales and marketing efforts. With over 35 years of industry experience and a team boasting 300+ years of combined expertise, we specialise in delivering tailored sales development, telemarketing, and data services. Our phone-first approach ensures direct engagement with key decision-makers, supported by GDPR-compliant data and advanced market research. Operating across 40+ countries and 14 languages, we provide scalable solutions that align with clients' unique growth objectives.

Our commitment to quality is evidenced by ISO 9001 accreditation and rigorous compliance standards. By combining proven methodologies with innovative strategies, we help businesses generate high-quality leads, shorten sales cycles, and achieve measurable ROI. Our client-centric philosophy prioritises transparency, ethical practices, and long-term partnerships built on consistent delivery of tangible results.
Services
B2B Telemarketing Sales Development Data Services Market Research Account-Based Marketing Lead Qualification Pipeline Management Inbound Call Handling GDPR Compliance Sales Channel Development
Details
  • Year established: 1990
Highlights and features
  • We have over 35 years of experience in B2B sales development
  • Our team brings 300+ years of combined industry expertise
  • We provide GDPR-compliant data services with global reach
  • We operate in 40+ countries with multilingual capabilities
  • Our ISO 9001 accreditation ensures quality management standards
Associations and certifications
  • ISO 9001
  • DMA
  • ICO
What people say
35+ years expertise 300+ years team experience GDPR-compliant data Measurable ROI Global reach
Services
B2B Telemarketing
Comprehensive B2B telemarketing services tailored to client requirements. Our specialists conduct unscripted, multilingual calls to generate high-quality leads and engage decision-makers. With three decades of experience, we combine strategic outreach with GDPR-compliant data to deliver measurable ROI. Our approach includes campaign optimisation and integration with CRM systems for seamless lead management.
Sales Development
Multi-channel sales development solutions managing inbound and outbound prospect journeys. We specialise in identifying target markets, nurturing leads through personalised engagement, and building sales pipelines. Our services include outsourced SDR teams, pipeline management, and appointment setting to enhance conversion rates and accelerate revenue growth for clients.
Data Services
GDPR-compliant data services including cleansing, building, and enrichment. We provide access to global datasets and custom database creation to support targeted marketing campaigns. Our data validation processes ensure 95%+ accuracy rates, while opt-in databases double campaign engagement effectiveness for improved marketing outcomes.
Market Research
Advanced market research combining qualitative and quantitative analysis. Our services include voice-of-customer studies, NPS surveys, and market scoping to identify growth opportunities. Using ISO 9001-certified methodologies, we deliver actionable insights through multichannel research approaches that combine AI tools with direct human engagement.
Account-Based Marketing
Strategic account-based marketing focused on high-value targets. We identify key decision-makers, conduct in-depth research, and implement multi-channel campaigns tailored to specific business needs. Our approach combines market intelligence with personalised outreach to shorten sales cycles and build long-term client relationships through measurable engagement strategies.
People
Greville Crowder
CEO
With over 35 years in B2B sales development, Greville leads GCL's strategic direction. He has grown the company from a telemarketing agency to a full-service sales development partner operating across 40+ countries, maintaining focus on quality and client ROI.
James Crowder
Managing Director
James oversees GCL's operational excellence, ensuring delivery of high-impact sales solutions. With extensive experience in scaling B2B operations, he focuses on process optimisation and technology integration to maintain the company's competitive edge in the sales development sector.
Cam Hoadley
Account Director
As Account Director, Cam manages key client relationships and ensures strategic alignment between GCL's services and client business objectives. With 15+ years in B2B sales development, he specialises in creating customised solutions that drive measurable revenue growth.
Gavin Kamudu
Client Delivery Manager
Gavin leads delivery teams to ensure exceptional service execution. With expertise in sales process optimisation, he focuses on maintaining quality standards across all client engagements while implementing continuous improvement initiatives to enhance service effectiveness.
Jenny Reardon
Financial Controller
Jenny manages GCL's financial operations, ensuring fiscal responsibility and strategic resource allocation. With a background in corporate finance, she plays a key role in maintaining the company's financial health while supporting growth initiatives.
Questions
What B2B services does GCL offer?
GCL provides telemarketing, sales development, data services, market research, and account-based marketing solutions tailored to B2B organisations seeking sales growth.
How does GCL ensure data compliance?
All data services follow GDPR requirements with opt-in databases, regular cleansing, and validation processes. We're accredited by DMA and registered with ICO for data compliance.
Can GCL integrate with our CRM?
Yes, we integrate with major CRM platforms including Salesforce, HubSpot, and Dynamics, either working within your system or exporting data in compatible formats.
What industries do you serve?
We operate across 40+ countries and 14 languages, supporting clients in EMEA, North America, and emerging markets with tailored B2B sales solutions.
How quickly can we see results?
While initial results may appear within weeks, our SDR services typically reach full effectiveness within three months through continuous process refinement and optimisation.
What makes GCL unique?
Our phone-first approach combines 35+ years' experience, 300+ years of team expertise, and ISO 9001 accreditation to deliver measurable ROI through data-driven sales strategies.
Reviews (4)
Zak Pugh
May 15, 2021 Report
This company is a great company to work for. By far one of the best marketing and telesales environments ive worked in.
Dark Defender
Jan 16, 2021 Report
Great place to work for, great energy, atmosphere and the people ARE OUTSTANDING. the work can get either dull or tough, and I can't think of many things to improve on. Great company to work for.
John Butler
Jan 20, 2019 Report
Company looks great on paper, however a different experience when you meet the management staff. Found them to be full of them selves and jumped up to be quite frank. Seems like they like to paint a lovely picture of turning your business around but the only motive is to line there own pockets to fund what looks like a lavish lifestyle, referring to the documentary on Panarama.
Trololololol Lololol
Jul 01, 2017 Report
Rubbish experience. Felt uncomfortable and found them to be rude and harsh. Bad attitude never going to visit here again.