Big Health, the UK digital health startup behind sleep health app Sleepio, has raised $12 million (9.5 million pounds) in a round led by Octopus Ventures. Kaiser Permanente Ventures also contributed to the round, as did Omada Health CEO Sean Duffy, returning investor Index Ventures, and JamJar Investments. The startup's app is not direct-to-consumer, Big Health sells its sleep health program and...