If you’re graduating in Winter 2025 or Summer 2026 and you’re looking for a summer internship that actually prepares you for a real career — not one where you’re fetching coffee and sitting in the corner — GLG’s Summer Internship Programme in London might be exactly what you’ve been looking for.
Here’s everything you need to know.
What Is GLG?
GLG — short for Gerson Lehrman Group — is not your average company. It runs the world’s largest insight network, connecting top-tier businesses with the expert knowledge they need to make better decisions. We’re talking Fortune 500 corporations, leading financial institutions, global consultancies, and major technology companies. Their clients don’t just want data — they want first-hand expertise from the people who’ve actually lived and breathed the industries they’re trying to understand.
GLG makes that connection happen. And their network of approximately one million experts — growing by hundreds every single day — is what makes it possible.
When you intern at GLG, you’re not on the sidelines of that world. You’re right in the middle of it.
About the Internship
The GLG Summer Internship is a structured 10-week programme running from Tuesday, 16th June to Thursday, 20th August 2025. It’s based at GLG’s London office in Fitzrovia — one of the most vibrant and well-connected parts of central London.
This is a fully in-office programme, so you need to be available and present for the full duration. If you can commit to that, what you get in return is an experience that very few graduate internships can match.
What You’ll Actually Be Doing
This isn’t a programme where you shadow someone for ten weeks and hope something sticks. From early on, you’ll be doing real work — the kind that has direct impact on client outcomes.
Your responsibilities will include engaging with experts and clients alongside senior colleagues, building relationships, and helping deploy the right solutions for each client’s specific needs. You’ll recruit new experts into GLG’s global network based on client requests, which means you’ll be having real conversations — largely by phone — with accomplished professionals across various fields.
You’ll own your work end to end. That means researching companies on behalf of client teams, identifying and recruiting the right experts, executing a personal research project, and delivering high-quality outcomes. You’ll also collaborate with your manager and internal teams to bring GLG’s full product suite to clients, with a focus on growing revenue and retaining accounts.
It’s demanding. It’s fast-paced. And it’s exactly the kind of environment that turns sharp graduates into exceptional professionals.
What You’ll Walk Away With
By the time the ten weeks are up, you won’t just have a line on your CV. You’ll have genuinely developed skills that transfer across industries and careers.
Specifically, you’ll come out of the programme able to communicate confidently with senior-level experts and clients, demonstrate accountability in time-sensitive situations, and achieve both individual and team targets — all while receiving close coaching and mentorship from experienced colleagues. The skills you build here — client service, negotiation, critical thinking, project management, and commercial awareness — are the kind that open doors for years to come.
And if you perform well, there’s something even more tangible waiting at the end: successful interns are eligible to receive a full-time offer for a GLG Associate position after graduation. This internship is, in many ways, a ten-week interview for a career.
Who Should Apply?
GLG is looking for candidates who are graduating in Winter 2025 or Summer 2026 and are available for the full programme. Beyond that, the ideal candidate is someone who genuinely enjoys the challenge of fast-paced, high-expectation environments.
You should have strong academic performance, excellent communication skills — including a comfort with phone-based outreach, which is a big part of the role — and the ability to think critically and solve problems creatively. You need to be someone who can juggle multiple priorities without dropping the ball on the details, and someone who takes feedback not as criticism but as fuel.
Most importantly, GLG is looking for people with real drive. They describe it as hustle and tenacity — the kind of motivation that pushes you to go above and beyond, not because someone told you to, but because you genuinely want to win for your clients.
If that sounds like you, this programme was built with you in mind.
How to Apply
Visit GLG’s official careers page at glginsights.com/careers and search for the London Summer Internship 2025 listing. Make sure your CV reflects strong academic results, any experience you have in client-facing or communication-heavy roles, and — where possible — examples of times you’ve taken initiative, solved a problem independently, or worked effectively under pressure.
Given that this is a competitive programme at a globally recognised firm, apply as early as you can. Opportunities like this fill up quickly, and the earlier you’re in the pipeline, the better your chances.
Final Thoughts
Internships are not all created equal. Some give you busywork. Some leave you invisible. GLG’s Summer Internship gives you responsibility, mentorship, real client exposure, and a genuine shot at a full-time career with one of the most interesting companies operating at the intersection of knowledge and business.
If you’re ambitious, communicative, and ready to be challenged — London and GLG are waiting.
