What I've learned from my guide dog's 'spy cam'

Unable to see the world around him, Amit Patel fitted his guide dog with a camera and set about recording evidence of the discrimination he faced but could not see.

The footage captured by the 'dog-cam' hasn't always shown the people of his home city of London in a good light.

Mr Patel asks his wife to review the film whenever he feels he has been treated unfairly.

The videos recorded in this way have shown a taxi not stopping for Mr Patel because its driver said he didn't see him and stewards at a railway station failing to offer assistance.

Video journalist Daniel Gordon.