London's FTSE 100 experienced a slight uptick of 0.1% to close at 9,230 on Tuesday, as investors remained cautious ahead of significant flash PMI data releases and a notable meeting at the United Nations between US President Donald Trump and Ukrainian President Volodymyr Zelensky. On the corporate front, Kingfisher saw its shares soar nearly 17% after the company revised its full-year outlook upward, driven by stronger interim profits. Similarly, Smiths Group's shares rose by over 4% following the announcement of annual operating profits that exceeded expectations. Conversely, Raspberry Pi's stock plummeted by 7% due to a sharp decline in first-half earnings attributed to weaker royalty income. Meanwhile, GSK's shares edged down by 0.5% amid reports that the Trump administration had requested pharmaceutical companies to ramp up production of leucovorin, a treatment for certain autism patients.