Business Report June 12, 2007 London - Coffee prices hit the highest level for nine years here on Tuesday, lifted by concerns over insufficient supplies from Vietnam. On the LIFFE, London's futures exchange, Robusta prices leapt to $1 918 per tonne - a pinnacle not reached since 1998. The price of Robusta coffee has surged by almost 70 percent since the same stage last year, when it was worth just over $1 100. Prices have almost tripled in value since November 2004. Coffee prices in London have rocketed as investors fret over lower exports from Vietnam, which is the world's second biggest coffee producer. "Essentially Vietnam is the worry," said Denis Seudieu, chief economist at the London-based International Coffee Organisation (ICO). "Not only are supplies there struggling to keep up, but the coffee is of a poor quality and many batches have recently been rejected at European ports." The concerns have also buoyed the price of Arabica beans which are mainl...