The FTSE 100 was little changed on Tuesday as losses in pharmaceutical, consumer and banking stocks offset gains in energy and mining shares. AstraZeneca fell 1.3%, GSK dropped 2.5%, BAT declined 0.7%, Rolls-Royce slipped 0.5% and Lloyds Banking lost 1.2%. Computacenter closed 5% lower after initially rallying on strong results. Shell rose 0.7%, BP gained 0.8%, Rio Tinto added 1.5% and Glencore surged 4% as copper prices reached another record high. Brent crude approached $100 a barrel before giving back some gains, raising concerns that inflationary pressures could keep interest rates elevated. UK retail sales rose 0.7% in August, below the 1.6% 12-month average and the 3.1% increase recorded in August last year, according to the British Retail Consortium.