Plastics Capital, which makes niche plastic products such as cables for electric fences, posted a sharp fall in pre-tax profits in the six months to September 30, compared with the same period the previous year, though the results were much improved from the intervening half year period.Pre-tax profits totalled £1.55m, compared with £1.74m over the same period the previous year, but much improved on the £269,000 posted in the six months to March 30.Revenues in the six months to September 30 totalled £12.88m, down from £14.9m in the previous half year and from £13.28m in the intervening period.'Although trading conditions have been extremely challenging, these interim results demonstrate how well the group has responded,' chief executive Faisal Rahmatallah. Volumes have started to turn upwards and profitability has improved as a result of cost reductions and the weakness of sterling.