Trade union Unite has condemned Hewlett-Packard's proposals to cut 3,400 jobs in the UK.
HP has offices in Belfast, Birmingham, Bracknell, Bristol, Derby, Erskine, London and Warrington.
The proposed cuts form part of HP's plans to shed 24,600 staff globally in a restructuring programme.
Peter Skyte, Unite national officer, said the union is not against change, but it will oppose any compulsory redundancies and demand full consultation.
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"We will closely monitor the impact of this proposal and will be pressing redeployement and reskilling of the existing workforce as part of any restructuring as was done at EDS," he said.
Up to 1,000 HP staff are to attend a meeting with HP CEO Mark Hurd at Ascot tomorrow.