Unions are planning a fightback, with the possibility of strike action in JobCentres and benefit offices, but many workers felt the moves were inevitable because the Chancellor has put his reputation on the line to push through reform. It is not immediately clear which ranks will face the axe but Mark Serwotka, general secretary of the Public and Commercial Services Union, predicted the real victims would be "teenagers and clerks, not the bowler- hatted Sir Humphreys". About 20 per cent of the 460,000 full-time posts in civil service headquarters will go during the next three years, with a further five per cent relocated to the North, Wales and Scotland by 2010.