Thomson Reuters has acquired secure file-sharing and collaboration platform HighQ, one of the highly regarded firms in Allen & Overy's Fuse network, for an undisclosed sum.

London-based HighQ offers a secure cloud-based platform for business collaboration, workflow automation and client engagement and, according to a statement, boasts a client list including more than half of the world's 100 largest law firms.

Founded in 2001, clients of the company include Clifford Chance, Freshfields Bruckhaus Deringer, Dentons, White & Case and Shearman & Sterling, according to the company's website.

Thomson Reuters president and CEO Jim Smith said in a statement: "HighQ's software platform is flexible, user-friendly and integrates with other leading-edge technology to provide a seamless user experience.

"This acquisition will position us with an open best-in-class platform at the heart of the legal software ecosystem. It provides us with an opportunity to leverage our channels to sell HighQ to thousands of large and medium-sized law firms and corporate legal departments globally. It also brings impressive software development talent into our organisation."

HighQ also has offices in the U.S., Germany, the Netherlands, Australia and India, besides its London base, and serves more than 400 customers.

Last month, Thomson Reuters bought secure audit confirmation services provider Confirmation as a means to strengthen the company's tax, accounting and audit functions.