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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I cannot rate Greg highly enough!
I cannot rate Greg highly enough! The info and insights he provided for our start-up were invaluable. Not only that but our conversation has filled me with motivation to take the next steps forward. Greg is highly experienced but most importantly he genuinely wants to help people and it really shows. Thank you so much!

Reply from Greg Mccallum - ThinkWork
A call you won't regret... (if you have an open mind)
Sometimes the best things are when somebody over-delivers. That is exactly what Greg did in our conversation, he was able to add a valuable perspective and honest feedback on his view and from his lens what the best way forward for you could be.
The pro-bono session is more than worth it however I would recommend preparing for this before hand and share as much context ahead of time to get the most out of the meeting.
Navigating start-up world is tough... and a call with Greg could be the thing you need to understand where you're going!

Reply from Greg Mccallum - ThinkWork
Greg helped us find our focus
Our conversation with Greg was incredibly valuable. He facilitated a productive discussion that helped us zero in on a specific user group for our initial launch. This laser focus allowed us to craft a succinct and actionable plan that we can put into action immediately. We highly recommend Greg to anyone seeking strategic direction, focus and insightful questioning.

Reply from Greg Mccallum - ThinkWork
Honest and measured with tangible next steps
Takes time to understand the business. Very honest, measured and realistic viewpoints with tangible next steps and advice.
We need more Greg's in the start-up ecosystem.

Reply from Greg Mccallum - ThinkWork
Insightful, actionable, honest
I loved the conversation with Greg! Insightful, actionable, honest... so much fun, and I learned a lot, what else can you ask for? Highly recommend having at least one conversation with him!

Reply from Greg Mccallum - ThinkWork
Guiding Visionaries Towards Success
He generously shared valuable insights and took the time to understand my vision. His commitment to my growth and unwavering support made the mentorship experience invaluable. Highly appreciated!

Reply from Greg Mccallum - ThinkWork
Great probono session that had helped…
Great probono session that had helped me with how to continue on with my business very effectively this information has been very valuable to me and even with the little amount of time its advice thatll carry through with this or indeed any future business thatll arise.

Reply from Greg Mccallum - ThinkWork
Great advice based on real experience
Greg is a great listener and I like his approach to giving feedback and suggestions. He shared some of his own experiences with similar challenges to what we are currently working on and offered new perspectives which led to some creative ideas and potential approaches which we will take forward.
Thank you!
Probono session with Greg was an absolute success! He was able to address current obstacles swiftly. His domain expertise is huge and lets you see different angles you've never thought before!
Loved my session with Gregory
Loved my session with Gregory. The session helped me understand how to solve my lead gen and sales process.
I am excited to take the action items Gregory outlined for me and see what the results.
Would totally recommend and do it again as I scale
Super informative
Super informative. I hope to connect with Greg again in the future.
Very helpful and informative session
Very helpful and informative session. Great energy and gave me few solutions to hurdles that I’m currently facing:
Clear recommendations and valuable strategy
Greg was super helpful in our pro-bono session. Took time to ask questions and understand the business. He gave very practical and clear recommendations for what we need right now in the business. Definitely recommend and aim to work with him again.
Invaluable Sales and Marketing Insights from Greg
Greg has been an exceptional advisor, shedding light on aspects of my business that had previously escaped my attention. In just one meeting, he shared numerous valuable insights. I'm a fan of his podcasts, which go beyond business, delving into the human aspect. I'm looking forward to our next meeting and excited to join his upcoming community.
Really great feedback and quality…
Really great feedback and quality suggestions, highly recommend.
He is extremely positive and dedicated…
He is extremely positive and dedicated to providing assistance. He takes the time to thoroughly understand the problem and diligently works to find a solution.
Great free session with Greg
Great free session with Greg. Helped recognised flaws in my business and how to improve them appreciated his honesty and straightforward opinion. Great feedback always willing to learn and take on board anything which helps my business going forward. Thank you !
So useful and insightful
So useful and insightful - thank you to Greg for taking the time to talk me through my ideas as I plan to scale my business. He has a wealth of knowledge! Worth putting it to use!!

Reply from Greg Mccallum - ThinkWork
Great Experience
Greg was very personable and offered great advice throughout the session, took it onboard and saw success before the end of the day!
It was extremely helpful and productive…
It was extremely helpful and productive to have an advisory session with Greg regarding my early-stage startup, where we discussed the overall product strategy. He stress-tested our decisions and provided valuable insights based on his solid experience, helping me confirm some critical aspects of our strategy and prompting me to reconsider others.
We addressed all the doubts and uncertainties I had at this stage, and next, I will seek advisory assistance from Greg again as we approach the sales processes, given his extensive knowledge in that area too.
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