The top firms were recognised by sector and service, as recommended by peers and clients.
Efficio was recommended for its work across the construction and infrastructure sector, as well as energy, utilities and environment. It was also recognised for consulting services provided in relation to operations and supply chain.
Jens Pedersen, CEO of Efficio, said:
"We are proud to be included in the first complete list of the UK’s Leading Management Consultants 2018. There are more than 8,000 management consultancies in the UK, which provides an indication of the intense level of competition within the industry. The fact that we made this list and that it was compiled based on recommendations provided by our peers and clients makes it particularly meaningful and we appreciate their acknowledgement."
Last year, Efficio was ranked the 15th fastest-growing management consultancy in Europe by Consultancy.co.uk based on data sourced by Statista and the Financial Times.