Andrew Drennan
Alvarez and Marsal
Andrew Drennan is a Managing Director with Alvarez & Marsal Disputes and Investigations in London. A Chartered Quantity Surveyor and testifying quantum expert, he brings more than 25 years of experience in construction disputes.
Mr. Drennan’s primary areas of concentration are expert witness services in international arbitration and litigation and quantity surveying, procurement, commercial management, project management and contract management. He has worked with clients across a range of industries, including construction, engineering, infrastructure, power, nuclear and utilities, oil and gas and aerospace and defense.
Mr. Drennan has served as an expert in matters involving the evaluation of the cost of construction and engineering projects; defects/remedial works in civil engineering and buildings cases; assessments of the costs on termination; independent opinions on the duty of care of quantity surveyors; and assessments of gross negligence involving contractors.