Our Story

Contollo is a new building consultancy that brings together built environment experts with people who know how to build a group.

The demand for energy efficiency, carbon reduction, and sustainability, coincides with increased expectations of what buildings can deliver. However, the building services sector is highly fragmented, with isolated disciplines and limited collaboration. This siloed approach reduces the effectiveness of the consultancy process and prevents developers from realising the full potential of smart buildings.

The founders of Contollo are on a journey to form a new mid-sized consultancy that works with commercial developers to offer building consultancy (MEP and Cost Management), with particular expertise in smart buildings. Contollo seeks to bridge the gaps in collaboration, allowing a more integrated and effective approach to building consultancy that unlocks the full potential of smart buildings for developers.

“Coming together is a beginning, staying together is progress, and working together is success.”

Henry Ford

Meet the Team

Our team is committed to building and establishing a group that will shape the future of the built environment.

Ruth Percival

Chief Executive Officer

Ruth is a seasoned leader with extensive expertise in the corporate finance, power/energy, and healthcare sectors. She has a track record of leading multi-disciplinary teams across diverse professional service disciplines including commercial/sales and operational/service delivery roles. Her leadership is values-driven, emphasising integrity, kindness, and collaboration. Ruth lives in Cheshire, where she enjoys fine art, live music, and walks along the beach, even on windy and rainy days. She has two daughters, a dog, a rabbit and frogs.

Oliver Dennis

Executive Chair

Oliver is an entrepreneur and business leader, with deep experience in professional services and consulting businesses. As the founder and former CEO of one of the largest independent healthcare consultancies, Oliver has, overseen numerous acquisitions, and management buy-outs. His leadership style is marked by evidence-based decision-making, transparent communication, and a commitment to continual evolution. Beyond business, Oliver lives in Cheshire and enjoys golf, walking, fiction writing, and the occasional motorboat adventure off the coast of North Wales. He has two sons, a daughter, a dog and a problem with moles in his lawn.

Ellis Goodfellow

Chief Commercial Officer

A seasoned professional with over two decades in the property consultancy sector, Ellis Goodfellow co-founded the cost-management consultancy firm Abacus in 2007. His expertise lies in cost planning and effective development strategies, particularly during the inception/feasibility phase. Ellis is an expert in benchmarking projects for cost and function, ensuring optimal value and minimizing risk. Committed to enhancing Abacus’s offerings, Ellis collaborates closely with the team to maintain high-service quality standards while guiding them towards success.

Mike Perry


Prior to setting up Abacus with Ellis in 2007, Mike gained 12 years’ experience at the same national practice as a Quantity Surveyor, the last 4 of which were as an Associate Director. He has worked on a variety of projects including student accommodation, luxury apartments, hotels, education, sports and leisure and industrial. Acting as an Employer’s Agent on a significant number of projects for student accommodation providers, Mike has delivered in excess of 25,000 study beds.

Are you a building consultancy owner? Interested in joining our journey?

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