The hi-tech weapons and defence firm said it is working with customers to “understand their immediate priorities”.
Many employees are still working on site with enhanced safety measures, as QintetiQ’s work is “vital to maintaining the capabilities of defence, security and critical national infrastructure, including the emergency services”.
The company said it is postponing the proposal of a dividend for the year to 31 March, while the board has agreed to salary cuts.
The financial year ended with £60mln in net cash, plus an undrawn committed revolving credit facility of £275mln.
Shares dropped 5% to 306.36p on Wednesday at the opening bell.