Warren's area of expertise are as a Strength & Conditioning and functional injury rehabilitation. Following his graduation in Sports Science Warren has gone on to study further qualifications in Strength and Conditioning gaining the National Academy of Sports Medicine (NASM) Performance Enhancement Specialist award.
He has particular interests in performance enhancement and injury prevention. Warren has experience working with professional footballers as well as several other sports including golf, athletics, swimming, rugby, hockey, cricket and tennis.
Warren oversees the strength and conditioning program at Millwall FC as part of the performance services provided by Think Fitness. Over the past season, Warren has worked closely with Millwall physiotherapist Bobby Bacic to ensure a progressive and individualised program has been delivered to each professional.