'DDA' refers to the Disability Discrimination Act 1995. The DDA Act outlined the definition of 'disability' and 'disabled person'. The act also provided requirements for relevant parties including employers and office-holders to prevent discrimination and harassment. For example, the act made it unlawful for an employer to discriminate against a disabled person. The Act also outlined requirements to make reasonable adjustments for those with disabilities.
In 2010 the Disability Discrimination Act (DDA) was replaced by the Equality Act