Our Services

Global B2B telemarketing, data & market research services – fill your B2B sales and marketing funnels.

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Our B2B Sales Development & Telemarketing Services

Our range of B2B prospecting, data and market research solutions are designed to support your organisation across multiple territories in multiple languages.

Whether you use us for a complete standalone sales development & telemarketing solution, or you need tactical or strategic support for your in-house capabilities, we’re here to help.

B2B Telemarketing

Phone-first, comprehensive B2B telemarketing, tailored specifically to your requirements and backed by decades of experience. Our specialists are here to support – it’s our job to ensure your sales team are provided with regular sales-ready opportunities to ensure you achieve your sales goals

Sales Development

Identify, target and engage the marketplace. Our multichannel SDR service is designed to manage
your entire inbound and outbound prospect journey, ensuring a smooth transition into your sales pipeline, dramatically boosting conversion rates and establishing a strong relationship from the outset.

Data Services

No sales or marketing strategy can function without appropriate, well-targeted data. We have access to one of the broadest international data sets in the world. By understanding your business and needs, we deliver highly specific, clean data that is ready to support your sales & marketing programmes.

Account-Based Marketing

We get you in front of your key accounts. Our ABM services help identify the key decision makers you should be speaking to, help you better understand the market, and engage decision makers with laser-precise telemarketing that endears them to your brand and drives them down the sales funnel.

Market Research

From voice of customer and NPS to in-depth primary research into the world’s largest organisations, we provide unique insights into your target audience that are unavailable anywhere else, helping you better understand your market, its needs and how best to engage with it. Insights that allow you to stay one step ahead of the competition.

Why GCL?

35+ Years’ Experience

Established in 1990, Our experts have been there, done that. We have a complete team of account managers, telemarketers, sales specialists, researchers, data analysts and more, enabling us to provide you with all the skills you need to see success.

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Drive Better Profits

We deliver tangible return on investment for our clients. We use proven methodologies to deliver industry-leading sales and telemarketing services. By partnering with us, you’re choosing better profits.

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Save Time, Reduce Hassle

While we work closely with your team to develop your strategy, we will handle much of the legwork. Trust us to generate the leads, trust your sales team to close them.

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Passionate, Results-Focused Team

GCL’s greatest asset is its people. Over 35 years, we’ve curated a crack team of industry specialists, all of whom are passionate about delivering results.

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We’re Fully accredited

Top Tips & Industry Insights

Browse our content to access our industry insights, written by experts, designed to help you develop your sales and telemarketing expertise.

Can Agentic AI Do Cold Outreach in the UK? The Legal Reality for B2B Sales Teams

1st July 2026

AI is rapidly changing how businesses think about sales outreach. We now have tools that can research prospects, write personalised emails, build call lists, draft LinkedIn messages, score intent signals, summarise conversations and even simulate human-like voice interactions. This has led to a very natural question for sales and marketing teams: Can agentic AI do […]

Human hand touching AI symbol to show AI assisting human SDRs, not being used instead of human SDRs.

How Outsourced SDRs Turn B2B Event Leads Into Pipeline

20th May 2026

B2B event season is in full swing! Calendars are packed, stands are built and teams are prepped. For many businesses, events represent a significant investment, both in time and budget. But when it comes to event outcomes, there’s an uncomfortable truth: Most of the ROI from events isn’t won on the day, it’s won in […]

Attendees at a B2B Event, using Outsourced SDRs for Event follow up

One Year on: The Biggest Risk This Year? Doing Nothing Again

22nd April 2026

This time last year, we wrote a blog post about uncertainty. This was due to economic turbulence, Political instability, budget pressure and slower decision-making. At the time, it felt like the perfect storm – and for many businesses, it was. Now we fast forward 12 months, and while the headlines may have changed, the underlying […]