The Civil Service could be hit by further strikes as staff at the Department for Environment, Food and Rural Affairs (Defra) consider industrial action over pay disparities.
The Public and Commercial Services (PCS) Union is set to ballot 5,000 members on strike action to resolve a pay row between officials from the newly-created Defra.
The argument centres around 600 staff that joined the new agency from another department and now earn up to £4,000 more than existing employees.
The ministry was disrupted by strike action last year which eventually led to an offer of a 10 per cent rise, or a minimum of £2,000 to the lesser paid workers.
However, PCS claims Defra has not eliminated the pay gap and is preparing its members for a ballot.