CT UK High Income Trust PLC (CHIB.L) is a UK-listed closed-end investment company that aims to deliver an attractive level of income return to shareholders, with capital growth as a secondary objective, by investing predominantly in equities and equity-related securities of UK companies across the market capitalisation spectrum. The trust maintains a diversified portfolio of approximately 40 holdings, with no single investment exceeding 10% of gross assets at purchase and few exceeding 5%; key sectors include financials, health care, energy, industrials, basic materials, consumer staples, utilities and others, with top holdings such as HSBC Holdings plc, AstraZeneca plc, Shell plc, Rolls-Royce Holdings plc and Rio Tinto plc; it pays quarterly dividends to Ordinary shareholders and quarterly capital repayments to B shareholders, generating yields of around 5-6% based on recent distributions totalling 5.62p per share class for the year to 31 March 2024. Managed by Columbia Threadneedle Investment Business Limited, with David Moss as lead portfolio manager since July 2023, the trust benchmarks performance against the FTSE All-Share Index and operates from the United Kingdom, where over 90% of its assets are allocated. In March 2024, the company simplified its listing structure by cancelling the admission to trading of its Units on the London Stock Exchange, enabling direct independent trading of underlying Ordinary Shares and B Shares without impacting voting rights; more recently in late 2025, it has actively managed share capital through sales of Ordinary shares from treasury, including 150,000 shares on 28 November and further issuances in December, alongside total voting rights updates reflecting issued capital of approximately 116.81 million shares.