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Tafida Raqeeb's parents won a High Court battle when a judge ruled the youngster could be moved to the Gaslini children's hospital in Genoa.
A genetic disorder meant Fabiana and Paula Chávez lost their sight as teenagers. They are now pianists, music researchers and educators.
On Tuesday morning, the group's co-founder, Gail Bradbrook, was filmed climbing the entrance to the Department for Transport in Westminster.