UK government websites and associated services have been designed to work without JavaScript (https://www.gov.uk/ https://www.gov.uk/). They have blogged about

UK government websites and associated services have been designed to work without JavaScript (https://www.gov.uk/ https://www.gov.uk/). They have blogged about this a few times: Building a resilient frontend using progressive enhancement (Dec 2019) https://www.gov.uk/service-manual/technology/using-progressive-enhancement https://www.gov.uk/service-manual/technology/using-progressi... Here is a much earlier (2013) blog article but still relevant How many people are missing out on JavaScript enhancement? (Oct 2013) https://gds.blog.gov.uk/2013/10/21/how-many-people-are-missing-out-on-javascript-enhancement/ https://gds.blog.gov.uk/2013/10/21/how-many-people-are-missi...