Brewer’s role will include managing relationships with production companies and corporate accounts, as well as proactively sourcing new business.
He joins Excel London from Royal Hospital Chelsea where he spent two years as events department manager responsible for developing new business strategies and revenue streams.
Excel London head of conventions Samantha Shamkh said: "Since the opening of our ICC, Excel’s conference and events business has increased dramatically and helped to take London to seventh in the ICCA rankings.
"The success of the Olympic and Paralympic Games has created unprecedented interest in London as an event destination. Harry’s skills and experience will be of huge benefit as we embark on what is set to be our most successful year to date."
Brewer joined the eight-strong conference and events team on 5 November.