James Latham PLC on Wednesday said demand for timber has continued to rise, reflecting growing customer confidence, helping support revenue growth.    The Hemel Hempstead, England-based distributor of timber, panels and decorative surfaces said revenue in the four months to July 31 rose 4.7% to £133 million from £127 million a year prior.    Volumes are up 5.9% year-on-year, while margins remain consistent with the second half of the previous year. Overheads and resulting profit are in line with market expectations, the firm added.    James ...