The breakdown of talks between security staff working at the GCHQ complex in Cheltenham and G4S may result in strike action.

The threat of strike action comes over a long term dispute over pay. Workers belonging to the PCS union have received permission to conduct a ballot which may lead to a strike.

A strike by security staff would affect around 150 members of the staff at GCHQ who are represented by PCS.

GCHQ have revealed that security measures are in place to cover any potential walk out, while G4S have said that reserve staff can be deployed if necessary.

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