UP to 400 Oxfordshire civil servants from job centres, tax offices and courts completed a third day of national strike action yesterday.

Public and Commercial Services Union members in the county had previously walked out on March 8 and 9 because of a Government proposal to reduce long-standing redundancy entitlements by a third.

Oxfordshire union leaders claimed there was a “limited” service for people trying to use job centres, tax offices or courts yesterday.

Union activists also protested outside Government buildings in central London from 6.30am.

As the workers stayed away from their desks, Tory leader David Cameron taunted the Prime Minister Gordon Brown in the House of Commons.

Mr Cameron challenged Mr Brown on whether he wanted Treasury staff to cross the picket lines.

Tracey Rogers, PCSU representative at Jobcentre Plus, in George Street, Oxford, said: “To have David Cameron referring to the picket line on Budget Day will raise the profile of our campaign and help us fight the proposed reduction in redundancy entitlements.

“We hope the Government has been embarrassed and the strike has now put the issue at the forefront of the news agenda.”

A spokesman for the Cabinet Office said all job centres, benefits offices, courts and ports remained open yesterday.

Minister for the Cabinet Office Tessa Jowell said public services were working normally and described the strike as disappointing.