PRODUCT-testing company Intertek has seen its shares slump after warning it is likely to see no improvement in organic growth or operating margins.

The London-based company, which counts Scottish Enterprise chief executive Lena Wilson as a non-executive director on its board, said revenue is around 5.1 per cent down across the first 10 months of the year, once currency fluctuations have been added in.

Its commodoties, chemicals and oil and gas divisions had not improved as expected in the second half of the year and are still being affected by difficulties in those sectors.

Shares in Intertek fell 206p, or almost eight per cent, to 2447p.