Thorn Group Limited announced profit guidance for the full half and year ending 31 March 2018. For half year, the company expects profit after tax to be around $11 million. For the full year, the company expects profit after tax to be in the range of $17 million to $20 million. This guidance primarily reflects a decline in trading conditions in the Group's Radio Rentals division and a poor month of trading in September which has continued into this month. These forecasts represent an approximate 30% reduction from the prior year's reported performance.