Based on research from CoStar, this category ranks consultancies by number and total volume of deals in the qualifying period. Based on research from CoStar, this category ranks consultancies by sq ft of deals done in the qualifying period. Working with CoStar, this category uses objective information gathered from its extensive industry-leading database on deals within the Thames Valley.

The award will be given to the consultancy that has completed the highest total of commercial deals in the office sector across the region and the highest total by sq ft transacted during the 18-month period from January 1, 2020, to June 30, 2021.