A teenager banned from school after teachers told her she could not wear a dress bearing the Union Jack flag told a crowd of more than 110,000 protesters gathered in London that 'British culture matters too'.

Courtney Wright, 13, was forced to spend a morning in isolation at Bilton School in Rugby, after staff told her she couldn't wear her Spice Girls-style dress or make a speech like other pupils.

The straight-A student, who had planned to talk about history and traditions for a special Culture Day organised by the school in July, was told the dress was unacceptable, before being removed from her lesson and asked to wait in reception until her father arrived to collect her.

After being introduced by Robinson as a 'brave little British girl', Courtney walked onto the main stage where she was received by rapturous applause and whistles.

Telling the crowd she was 'so proud to stand here today', she said: 'Even though I'm only 13 I already know how lucky we are to live in this country.