E2V, which makes semiconductors used in planes and power products for cancer radiotherapy treatment, has agreed to a £620m foreign takeover by Teledyne Technologies. The Mail reports that the deal has raised concerns that British talent and ideas will leave the UK if its brightest start-ups are not protected. The Treasury has launched a review of financial barriers preventing UK start-ups from scaling up, and has also pledged to increase the amount of services it buys from small businesses, and reduce corporation tax, but former Business Secretary Vince Cable said those measures did not go far enough.