Adds CEO quotes, details on results, forecast LONDON, Oct 14 (Reuters) - Pepco Group PCOP.WA, the owner of British discount retailer Poundland, forecast full-year core profit at the upper end of market expectations on Thursday, after revenue rose 19.4% helped by its aggressive store openings. It did, however, warn that pressure on global supply chains has increased with reduced raw material availability leading to commodity inflation. The company said that has been further compounded by constrained container capacity which significantly increased shipping costs from the final quarter.