NC3Rs Non-human primate accommodation, care and use guidelines The guidelines were originally published in 2006 and updated in 2017. They have been instrumental in improving the housing and care of non-human primates at UK universities and other publicly funded laboratories internationally through, for example, requiring increased space for the animals, social housing and daily foraging opportunities – all of which are critical for NHP welfare. The guidelines exceed the legal minimum standards required by the UK Animals (Scientific Procedures) Act 1986 and associated Codes of Practice, the US ILAR Guide, and similar international texts.