Sia Partners is a global boutique firm of management consultants. We are at the forefront of innovation and a leader in Transformation Consulting, Data Science, and Digital Strategies.

We work with the world’s best businesses to help them implement complex organisational change. We have doubled in size in the last three years.

Molten was a Transformation Specialist with an industry leading Transformation Hub dedicated to helping their clients build their own internal capability in Transformation. Together we have IP, deep digital technology experience, and a global delivery capability that is supported by a huge bank of corporate knowledge, experience and qualifications in Transformation Consulting.  On 1 September 2016 Molten was acquired by Sia Partners.
Molten was established in 2003 by Rory Colfer and Irene Molodtsov and has since developed and expanded to become the unique specialist consulting firm which is now a valued part of the Sia Partners Team. In the past 17 years, Sia Partners has become a leading international independent consulting firm. The firm is recognized for its advanced expertise in the energy, banks, insurance, telecoms and transportation sectors. Cofounded in 1999 by Matthieu Courtecuisse, the group is now present in 16 countries and counts the United States as its second-largest market. Its global presence is supported by 850 consultants in 20 offices. Visit the global site to find the entire portfolio of services and sectors.

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Our Partners and Directors

Irene Molodtsov

Irene Molodstov is a CEO at Sia Partners UK. Together with Rory Colfer, she established Molten in 2003 where she was a Managing Partner. Her experience lies in designing and running major transformation programmes.

Prior to Molten, she worked in KPMG Consulting running major change initiatives across Europe. Prior to moving to the UK, Irene lived and worked in Hong Kong. She started her professional career in industry working for Pilkington in Australia. Her functional areas of expertise include programme management, change management, strategic programme communications and organisation design. She gained a Bachelor of Commerce (University of Melbourne) and Post Graduate Industrial Relations (University of Melbourne).

When Irene is not working you can find her chasing her two young children around who are in turn chasing their chickens.

Rory Colfer

Rory Colfer is a CEO at Sia Partners UK. Together with Irene Molodtsov, he established Molten in 2003 where he was a Managing Partner. His functional expertise is in Strategy and Large Scale Programme Management. 

As a chartered accountant and a former CEO & Finance Director, he brings industry as well as business experience to consulting. Rory has led significant programmes from corporate strategy assignments for Oil Supermajors and Consumer Goods businesses through to the development of optimal organisation structures and post-acquisition and merger integration restructuring. Rory is a performance coach and regularly coaches senior executives across different sectors. Prior to Molten, he ran the Strategy Consulting arm of KPMG Consulting. Rory has more than 20 years of consulting experience.

Rory loves golf, skiing, kids and socialising. 

Graeme Corbett

Graeme is a Director at Sia Partners UK and leads the Programme & Project Management Practice. His functional expertise lies in designing, planning and managing large scale transformation programmes as well as Operating Model design and delivery.

Before Sia Partners, Graeme worked in PriceWaterhouseCoopers’ UK consulting practice, specialising in Operations transformation in the Energy sector. Prior to PwC, he worked in industry for three years with ExxonMobil Lubricants & Specialty Chemicals and before that at Chase Manhattan Bank and Bain & Company. Graeme holds a Bachelor of Science (Geography) from the University of Leeds as well as a Masters in Business Administration from Leeds University Business School.

In his spare time, Graeme can be found running around after his three small children, running or trying to fit in a game of golf.

Our People

We are passionate about what we do and will think outside the box to deliver the best results for our clients.

We have a strong team of experienced consultants who focus on adding value to our clients. Our team are specialists in their field and have a proven track record of delivering success.

Our aim is to impress, and experience has proven that our consultants succeed…

Our Values

  • We Enable our clients to deliver success
  • We Challenge our clients to ensure the best results
  • We Partner with our clients to ensure change sticks
  • We are Curious in our processes to ensure we deliver
  • We Specialise and focus on what we do best
  • We form Trusting relationships to ensure long term impact

Get in touch

To find out more about how Sia Partners UK can support your business transformation programmes and help you build your internal capability, please get in touch. We would love to hear from you.

We can be contacted on +44 20 7933 9333 or ukcontact@sia-partners.com.

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