1) Open data refers to data that is freely available for anyone to access, use and share. The economic benefits of public sector open data in the UK are estimated to be $10 billion per year. 2) Businesses can use open data to innovate, make better decisions and cut costs. For example, open transport data from Transport for London is estimated to be worth $23-88 million per year in applications. 3) However, there are still challenges for UK businesses using government open data, such as unclear licenses, lack of machine readability, quality assurance issues, and skills deficits within companies. Overcoming these challenges could unlock even more economic value from open data.