LONDON (AFX) - Total output of the UK production industries fell a seasonally adjusted 1.2 pct month-on-month in Sept which left it 3.0 pct down on the year, according to National Statistics. The monthly fall was the fastest since Aug 1997. NS said the figures do not appear to show any effect from the Sept 11 attacks on the US. The AFX News median of analysts' forecasts was for Sept industrial output to be down 0.3 pct on the month for a 2.4 pct year-on-year fall. In the three months to Sept, output fell 0.6 pct compared with the previous three months for a year-on-year fall of 2.9 pct. NS said latest estimates suggest trend production at -4.0 pct, which compares with a -2.5 reading last month. There was no change month-on-month in mining and quarrying output, while oil and gas extraction was down 0.4 pct on the month. Output of the gas, electricity and water supply industries fell 0.1 pct. Manufacturing output was down 1.6 pct in Sept for a year-on-year decline of 3.7 pct. This was the largest month-on-month fall since May 1992. The AFX News median of analysts' forecasts was for Sept manufacturing output to have dipped 0.4 pct on the month for a 2.3 pct year-on-year fall. Manufacturing output was down 0.8 pct in the three months to Sept when compared with the previous three months and was down 2.9 pct from a year ago. The latest data left the trend in manufacturing output -5.0 pct, compared with a -4.0 pct last month. Significant falls in the latest three months were reported in electrical and optical equipment, basic metals and metals products as well as in textiles and clothing, machinery and equipment, wood and wood products, pulp and paper, rubber and plastic products and non-metallic mineral products.