Law started in the role on 3 January and looks after a team of 45, leading the agency's work with spirits brand Barcadi.
"Being able to put into practice my extensive drinks experience in particular, coupled with the opportunity to work with a group of smart, talented and dynamic people, makes it a very exciting start to the year," Law told PRWeek.
Reporting to Ogilvy PR UK CEO Marshall Manson, Law will also handle PR for clients including TK Maxx, Puma, Huawei, and Ford.
"Through clients like Bacardi and TK Maxx, we're making things that people choose to consume and share, and putting PR front and centre in the marketing mix," Manson said.
Her replacement is yet to be announced.