The Police Federation says while a significant proportion of officers say they want the right to strike it's not appropriate to do so if fewer than half voted for it.
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Jade Dunne, 29, has been charged with owning a dog dangerously out of control resulting in the death of Dexter Neal at her home in Halstead.
Dashcam footage captured the tree crashing down onto 40-year-old Sarah Robb's BMW just after she left her home in Syston on Thursday.
The teenagers, aged 19 to 15, appeared in custody at Westminster Magistrates' Court on Saturday, supported by their families.