Oxford Sciences Innovation (OSI), Oxford University’s recently-launched university venturing fund, has exceeded its £300m ($474m) target to raise £320m with the backing of Google Ventures, internet company Google’s corporate venturing unit.

Google Ventures was joined by Sir Charles Dunstone, the founder of phone retailer Carphone Warehouse, and a consortium of private investors.

OSI’s existing backers include commercialisation firm IP Group, Oxford’s Endowment Fund and charity healthcare investor Wellcome Trust, as well as investors including Woodford Investment Management, Invesco and Lansdowne…