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 was the strongest individual gainer, climbing more than 9% after raising its profit guidance on momentum at Screwfix and in Poland and Iberia. Smiths Group rose around 6.5% after reporting higher revenue and pointing to expected second-half growth at John Crane, alongside continued benefits from the data-centre boom at Flex-Tek. Oil majors 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. A CBI survey showed British factory orders rose this month to their highest level since July 2023. Separately, UK government borrowing reached £18.3 billion in August, above expectations of £15.5 billion.