The FTSE 100 attempted to extend its gains for a second session on Tuesday after rising 0.8% on Monday, as oil prices turned lower following a report that Iran could reopen the Strait of Hormuz if the US lifted its blockade of Iranian ports. Kingfisher led individual gainers, climbing more than 9% after raising its profit guidance on strong momentum at Screwfix and in Poland and Iberia. Smiths Group advanced around 6.5% after reporting higher revenue and highlighting expected second-half growth at John Crane, along with continued benefits from the data-centre boom at Flex-Tek. On the other hand, Shell and BP fell 1% and 2.4%, respectively. President Trump is due to address the UN General Assembly and may meet with Iran’s president. On the data front, a gauge of British factory orders rose this month to its highest level since July 2023, according to a CBI survey. Meanwhile, UK government borrowing reached GBP 18.3 billion in August, above expectations of GBP 15.5 billion.