(ShareCast News) - Online white goods retailer AO World said it's on track to deliver on its long-term strategic objectives and expects overall revenue for the quarter ended September to grow by 20% to 21% year-on-year, driven by AO.com sales of over 30%.In a trading update ahead of its interim results on 24 November, AO said the UK business continues to grow and it has accelerated its investment in the AO.com brand over the quarter through TV advertising and other media. The group said progress in Germany remains in line with plans and AO World continues to be encouraged by the development of the business.It said that following an initial television advertising campaign in Germany during July, the company has invested in further campaigns in August and September and expects to incorporate such campaigns into its operating model going forward.