Christie Group is promoting from within after finance director Robert Zenker left the loss-making professional business services company today after 16 years.The company, which provides surveys, valuations, insurance and stock control for the leisure, retail and care sectors, said Zenker's responsibilities will be taken on by 33-year-old group financial controller Dan Prickett.It also took the opportunity to confirm that trading for the year ended 31 December 2009 will be in line with current market expectations.Charles Stanley predicted a full-year loss of £3.3m following August's interim figures.The numbers will be published next Monday.