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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Arriva Rail North, Greater Anglia and South Western Railway are all affected.
The Duchess of Cambridge was beaming on the steps of the Lindo Wing hours after giving birth. Mums are also revealing how they looked.
Everyone has their heads down and their eyes averted but I know they can sense my presence.