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Meet the team

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Colin McArdle

Managing Partner

Colin formed Time Consulting Group in 2013, having gained a wealth of in-house experience at organisations such as Johnson Controls, Tyco, Marconi, GE Healthcare, the RAF and Rolls-Royce. A certified Lean Six Sigma Master Black Belt (MBB), Colin brings deep expertise in digital transformation, operational excellence and business process re-engineering.

He lives in Wilmslow, Cheshire with his wife, his children, his cat Jasmine and his Cockapoo Connie.

“I’ve got a passion for improving things, for finding better ways to run operations. For me, there’s nothing more satisfying than helping a CEO reconfigure their business and kickstart a new era of growth.”
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Richard Sadler


A certified Lean Six Sigma Master Black Belt (MBB), Richard began his career as a process engineer with 3M before moving into international management positions within their pharma operations. He has played transformational leadership roles at ADT, Tyco and Dräxlmaier Automotive – and is now one of three partners at Time Consulting Group.

He is based in Walsall in the West Midlands and is a lifelong Aston Villa fan.

“So many organisations have value that’s just sitting there untapped, waiting to be released. We’re experts at helping them do that. We can untangle complexity, bring clarity and make it much simpler to drive real improvements.”
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Richard Guest


Following an MA in Computer Science from the University of Cambridge, Richard leveraged his abilities to implement new technologies for managing large data sets to improve operating performance at Network Rail. A certified Lean Six Sigma Black Belt and Senior AI Consultant, Richard has a deep understanding of change and transformation through the lenses of People, Process, Systems and Data.

Having gained a wealth of experience in ADT, Tyco, Thomas Cook Airlines, Hilti and Peak AI, he is now one of the three partners at Time Consulting Group.


He lives in South Manchester with his wife, daughter and twin boys and is a keen mountain biker and EV owner.

“I have always been driven to try new ways of working and find the best way to get things done. Coaching and mentoring leaders and teams through the change journey is my passion. I bring extensive experience of digital transformation, data science and artificial intelligence to Time Consulting Group".
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Richard O'Mara 


Richard has a developed a wealth of experience across multiple domains of the aviation and aerospace value chain, having worked in both Flight Operations and the Maintenance Organisation at Thomas Cook Airlines.  He has also worked as an Airline Captain, having flown Boeing B757/767, Airbus A320/330 and the Tornado whilst in the RAF. 

In his management roles, Richard has had significant success leading many multi-national projects and programmes, delivering culture change, cost savings, new technology introduction and organisation-wide process improvement. The depth of his experience in these areas is what led Richard to oversee Time Consulting Group’s aviation vertical. 

Richard lives in Wilmslow with his family and is a huge rugby union fan.

“No matter what kind of business environment you are in, your customers and your competitors are frequently changing. Your current process and culture may have served you well, but that is now, almost certainly, sub-optimal.  All you need to fix that is some external perspective and knowledge – Time Consulting Group can help you identify and deliver solutions that work.”
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Rebecca Buren

Graphic Designer

Starting as an intern while studying for her master's degree in graphic design, Rebecca joined Time Consulting Group as the Graphic Designer in September 2021.

She supports the company with design across sales support materials, social media and print. She also produces short motion graphic videos for sales enablement and maintains, and redesigned, the company website in the HubSpot CMS.

Rebecca lives in Staffordshire with her husband and loves listening to the artist Surfaces. 

“I’m passionate about design and how it can be used to communicate a message and engage with different audiences through various mediums."
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