Human Rights – Freedom of thought, conscience, and religion – Interference with – Defendant charged with witness intimidation – Refusing, on grounds of religious belief, to remove niqab to reveal face during proceedings in Crown Court – Whether requirement that defendant remove niqab interference with freedom to manifest religious belief – Balancing right to fair trial against rights and freedoms of others – Human Rights Act 1998, Sch 1, Pt 1, art 9