The Ministry of Defence has insisted two new Royal Navy aircraft carriers will go ahead as planned.
Reports on Friday morning suggested the department was considering delays to the £3.9bn contract to meet Treasury demands for cuts to its budget.
The Financial Times said officials could delay the project by up to 18 months to stagger the cost of the carriers, announced by defence secretary Des Browne last July.
The MoD confirmed there had been a "slight delay" while the joint venture between BAE Systems and VT Group was established as a legal entity.
But a spokesman denied the project would be held up, saying: "The programme is going ahead and there is no delay to the existing schedule.
"The comprehensive spending review does allow us to proceed with this."