The simple National Variation Agreement template is used to effect the NHS Standard Contract National Variation for 2017-19, in accordance with Option 1 in the Guidance on National Variations to existing 2015/16, 2016/17 and 2017-19 (November 2016 edition) full length contracts and 2016/17 and 2017-19 (November 2016 edition) shorter-form contracts.