Mick Cash, from the RMT Union, says that he does not believe that Londoners want fundamental freedoms - such as the right to strike - to be eroded.
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Gary Johnson says he signed a "gagging order" as part of his settlement - but Chelsea have since waived the clause.
Rail passengers hit by long-running disruption on the Southern network are to be repaid the equivalent of a month's travel.
The studios were home to some of ITV's best loved programmes dating back to the 1960s.