The history of accessibility on London's transport network.

The Disablement Income Group (DIG) was a British disability pressure group formed in 1965 in Godalming, Surrey. It is considered to be one of the first pan-impairment pressure groups in Britain, and was created to campaign for the introduction of a full disability income through the social security system for all disabled people.

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DIG was formed by disabled people, as key leaders such as Du Boisson, Mary Greaves and Peter Large were themselves disabled. For this reason, many consider DIG to represent one of the key organisations in the beginnings of the modern disability movement in the United Kingdom.