Alibaba has bought $3bn of shares in Ofo from another existing backer, GSR Ventures, according to a relative of GSR's managing director.

The company, which holds the largest share of China's mobile ticket retail market, is backed by Tencent, Meituan-Dianping and Enlight Media.

Sanofi will exit cancer drug developer Impact Biomedicines in an acquistion by Celgene that consists of $1.1bn up front and potentially billions in milestone payments.

Tengelmann Ventures has co-led a series D round for luxury watch seller Chronext, which will use the cash to expand to the US and Asia.

The Salesforce Ventures-backed file storage service has some 500 million users and was valued at $10bn as of 2014.

The UCL Technology Fund has provided capital to data anonymisation software producer Anon AI alongside the London Co-Investment Fund, AI Seed and Ascension Ventures.