A thinktank called Labour Together, linked to Keir Starmer and Morgan McSweeney, has been exposed for investigating journalists who were looking into the group’s funding. One of those journalists was the Guardian’s Henry Dyer. He tells Helen Pidd how he found out and why it matters. Help support our independent journalism at <a href="https://www.theguardian.com/infocus">theguardian.com/infocus</a>