(For a Reuters live blog on U.S., UK and European stock markets, click LIVE/ or type LIVE/ in a news window) * FTSE 100 up 0.5%, FTSE 250 adds 0.3% Aug 4 (Reuters) - London’s FTSE 100 climbed on Wednesday, helped by strong earnings and heavyweight miners, although investor mood remained cautious over rising COVID-19 infections and risks of higher inflation. The blue-chip FTSE 100 advanced 0.5% with builder Taylor Wimpey being the top gainer, while miners BHP Group , Rio Tinto and Anglo American were the top boosts on the back of strong base metal prices. Taylor Wimpey gained 6.1% as it joined bigger rivals in forecasting sustained demand and forecast annual operating profit above the top end of market consensus. The domestically focused mid-cap index inched 0.3% higher. Legal & General gained 2.4% after it posted an above-forecast 14% rise in first-half operating profit and said it saw continued strong growth. British e-commerce company The Hut Group rose 3.6% after it said it would buy UK-based online beauty retailer Cult Beauty for 275 million pounds ($382.91 million). (Reporting by Shashank Nayar in Bengaluru; Editing by Subhranshu Sahu) Our Standards: The Thomson Reuters Trust Principles.