** Telecom Plus down c.23 pct, poised for biggestever one-day drop & down at levels not seen since mid 2012
** Co, which provides gas, phone, internet & electricityservices to households & smaller businesses, says FY profit willmiss prior forecasts
** Impacted by cut in energy prices & lower demand due tomild winter
** Most actively traded stock on FTSE 250 index,with more than twice its 90-day daily avg volume having gonethrough after just 20 mins (RM: tricia.wright1.thomsonreuters.com@reuters.net)