Union leaders have expressed fury that workers at the firm have been kept waiting for confirmation of the job losses in the wake of the Government’s defence cuts.
The job losses are expected to be mainly at sites in its military aircraft division in Warton and Samlesbury in Lancashire, and Brough, East Yorkshire.
There is speculation that 900 jobs will be cut at Brough, 820 at Warton and 560 at Samlesbury, with hundreds more at smaller BAE sites.
The company said in a statement: “BAE Systems has informed its staff that we are reviewing our operations across various businesses to make sure the company is performing as effectively and efficiently as possible, both in delivering our commitments to existing customers and ensuring the company is best placed to secure future business.
“Whilst there has been a lot of media speculation it has always been our intention to communicate the results of the review to employees as a priority, and this will take place on Tuesday September 27.”
Union officials said the Government’s defence cuts were to blame for the job losses, which they described as a “hammer blow” to manufacturing, as orders for the Eurofighter Typhoon combat jet slow down.
Paul McCarthy, regional officer of the GMB, said it was a “disgrace” that workers heard via a leak to the media over the weekend that thousands of job losses were imminent.
“We are going to ask the company to launch a formal investigation to establish who leaked this information.”
Dave Oglesby, another GMB officer, said a consultation on previously announced job cuts at Brough had only just finished.
“Workers were told that the purpose of the cuts was to make Brough viable and save jobs for the future.”
Unite national officer Ian Waddell said: “These job losses will be a hammer blow to the UK defence industry, which is already reeling with the consequences of the Government’s ‘buy off the shelf’ policy.”
Mr Waddell called on the Government to offer immediate support to BAE Systems to keep its order book strong and avert heavy job losses.
Shadow defence secretary Jim Murphy said the news was “a devastating blow for Lancashire and Yorkshire and a real knock for UK manufacturing”, adding: “We need a fast response from ministers with a clear plan of action.
“At a time when it is so hard to find a new job this is a dreadful moment to lose the one you have.
“The defence industry is vital to the UK, supporting both our forces on the front line and the wider UK economy.”