Gregory has been enormously helpful to steer the business to the right direction. In a short session with him, he sees the problem with the business and identify bottlenecks - and tell you the probl... See more
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Greg's advice struck the perfect tone for me. He's extremely knowledgeable, but doesn't shove it in your face. He provides really well-tailored advice, personalised for each business, because he knows... See more
It was only an hour-long session, but packed with valuable insights and actionable advice. He highlighted what’s important for us to focus on right now, rather than getting sidetracked by the wrong th... See more
Gregory gave me some excellent advice on how to grow my budding business. He asked me some candid questions and made me completely reconsider my approach - I realise now that I was going down a dead e... See more
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Company details
Written by the company
ThinkWork helps companies scale revenue by turning early sales traction into a predictable, repeatable commercial engine. We work with teams where sales exist but performance is inconsistent and difficult to scale. Using AI-driven analysis of real sales activity, we diagnose what’s actually happening and rebuild the commercial system to make performance repeatable in weeks, not quarters. Operator-led, hands-on, and focused on execution, not theory.
Contact info
66 Paul Street, EC2A 4NA, London, United Kingdom
- greg@thinkwork.info
- thinkwork.info
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Wow - Great service
Wow. I really have only good things to say about Greg and this service in general.
As an early-stage founder, its very easy to get stuck in the weed of your idea. Greg has the great ability to very quickly absorb a lot of information in order to give you great, really actionable advice.
Greg, thanks again for all the help.

Reply from Greg Mccallum - ThinkWork
Great pieces of advice!
I had a great discussion today with Greg who gave me very valuable pieces of advice and interesting perspectives. He is a great person to bounce ideas with. He is "no BS" and straight to the point, which is exactly what I needed. Highly recommend having a chat with him!

Reply from Greg Mccallum - ThinkWork
No BS and straight to the point
I recommend Gregory for any founders who are looking for unique coaching or advice for their startup. We cut all the BS and got straight to the paint points and root causes of my sales pipeline. Gregory's approach is very strategic and personable, his commercial background resonates through for someone who also comes from a commercial background - i highly enjoyed our conversation and sometimes you just need that extra push!
Really good sounding board and huge value add from just an hours worth, highly encourage founders to take up the pro-bono offer - you won't regret it.

Reply from Greg Mccallum - ThinkWork
Focus is the key outcome that you would…
Focus is the key outcome that you would leave with post-meeting with Gregory. He is an expert who knows how to nail it right in just minutes.
I will be coming back to him real soon.

Reply from Greg Mccallum - ThinkWork
Useful and Actionable Guidance
Greg has a keen eye for honing in on the problems at hand and suggesting actionable steps to follow.
You can tell he has real world experience from his previous ventures and not just repeating from a book on business coaching!
I will be speaking with him in the future to arrange some further sessions I'm sure.

Reply from Greg Mccallum - ThinkWork
Excellent advice, very sharp and focused thinking
In less than 15 minutes, Greg was able to focus me on the type of business I would like to start, organize my thoughts on potential audiences and how to reach out, how to build reputation, and finally when and how to start billing. He also advised on how to do all of this while keeping a full time job still. The experience was fantastic- Greg is very sharp, keeps you focused and doesn't let you be taken by your own fears and blockers. I will 100% get back to him when my soon to start business is ready for the next steps. Thank you Great!

Reply from Greg Mccallum - ThinkWork
Exceptional session with Greg!
I recently had the privilege of utilising Greg's time, and I must say it was nothing short of brilliant! From the moment the session began, it was abundantly clear that I was in the hands of an expert who genuinely cared about helping me succeed.
The session was scheduled for an hour, and every minute was packed with invaluable insights and actionable advice. No time was wasted as Greg delved into the heart of my commercial challenges. He had the ability to assess my specific situation quickly and provide tailored solutions was nothing short of remarkable - which shows the amount of experience and knowledge he has build up over the years. What truly set our session apart was the perfect blend of practical advice and mindset coaching. It's one thing to receive guidance on immediate actions to take, but it's another to have someone empower you with the right mindset to tackle those actions - and Greg did just that. This left me feeling not only equipped with knowledge but also with the confidence to implement his recommendations. By the end of the session, I had a clear roadmap of steps to take, a newfound sense of determination, and a deep sense of gratitude for Greg's generosity and expertise. I would highly recommended booking a pro-bono session with him.

Reply from Greg Mccallum - ThinkWork
The advice was well appreciated.
Gregory was super helpful to us in breaking down what we needed to do, understanding what we're doing and what phase of the process we're in, and our next steps. He did all this in an hour. I couldn't have asked for better advice and the fact that he was a straight shooter really helped too. He doesn't beat around the bush and will let you know what is and isn't viable.

Reply from Greg Mccallum - ThinkWork
I've talked with a lot of sales coaches…
I've talked with a lot of sales coaches and mentors, and often it's a lot of "here is why I'm good". Not with Gregory. We sat together, and he helped me. No fluff. Instant value. Makes me laugh to think how easy it can be, and how complicated people make it.
Genuinely great guy with sober, instantly actionable insights. He'll have a pro bono chat with anyone, so nothing to lose.

Reply from Greg Mccallum - ThinkWork
Greg is very knowledgeable and acts as…
Greg is very knowledgeable and acts as a sounding board & helps you organise your thoughts to make the right decision.
Asks all the right thought provoking questions to make sure you tackle your challenges from the right angle

Reply from Greg Mccallum - ThinkWork
1hr session definitely worth it!
We told Greg our current business situation. What we aim to do and what we were struggling to do. He gave us great advice based on his experience but mainly made our vision alot clearer. Would 100% recommend!

Reply from Greg Mccallum - ThinkWork
Greg was straight to the point and gave…
Greg was straight to the point and gave me practical skills to sell our SAAS, which I am pleased about. He confirmed my approach and assured me that I am on the right path.

Reply from Greg Mccallum - ThinkWork
Very useful advice
Gregory is easy to talk to and easy to understand. He was quick to grasp the value of my product and could easily relate to some quite technical issues involved in bringing it to market. I learned many things in the free one hour advice session, things that I'm sure will save me a lot of time and stress in the future. So it's five stars from me.

Reply from Greg Mccallum - ThinkWork
Thoughtful advice & tangible takeaways
Greg was understanding and supportive, and gave me tangible actions to take away and work on I really enjoyed the session and highly recommend!

Reply from Greg Mccallum - ThinkWork
Helpful!
Thanks Gregory for showing a genuine interest in trying to help with our sales process and strategy!
Candid advice, no BS
Greg gave me really useful, candid advice about the next actionable steps I can take to increase sales at my early stage startup. He was able to cut through the BS and provide clarity on what I should and shouldn't be focusing on.

Reply from Greg Mccallum - ThinkWork
Only great listeners can give great advice
Gregory is a great guy who listens and asks relevant questions and then gives proper answers to the questions that you might have.
Got some very simple advice, which for some reason, didn't come to my mind before. And I believe that is what great conversation partners do. Open the eyes to the most simple things, that realistically can make a big impact on your current activities.

Reply from Greg Mccallum - ThinkWork
Highly Recommended: Startup Guidance Extraordinaire
Greg provided excellent guidance and insights for my startup. His honest, insightful feedback and practical go-to-market strategy plan were invaluable. He provided tailored, constructive, and actionable advice, making our interaction extremely productive. Highly recommend Greg to any startup looking for robust and honest guidance.

Reply from Greg Mccallum - ThinkWork
Valuable Experience
When my team member found Greg, I was skeptical about talking to someone I don’t know about my project. However, I am open minded and decided to talk to him about my project. It proved to be a great experience. First of all the conversations flowed very well, and Greg is able to communicate his advise and ideas in a simple and organised fashion. His ideas were useful and his questions helped me to see things from a different prospective. His advise is great, and I can see he is easy to work with.

Reply from Greg Mccallum - ThinkWork
Helpful, honest, caring
I've booked a free session with Greg. Initially it was booked for half an hour, but he stretched it for me, because I had so many questions. I felt that he also did his research on me, and my business, and wasn't a bait at all to book a paid session. I can highly recommend.

Reply from Greg Mccallum - ThinkWork
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