What diabetics with no particular extra complications are being asked to practise is 'social distancing' not isolation, and you can still go to work. If you have other more severe health problems and need to isolate, you will receive a letter from the NHS by this weekend, (but this is mainly for transplant, or cancer patients, and things like that) See here for the government guidelines and an explanation of them.
The Secretary of State for Health and Social Care, Matt Hancock has launched an expanded public health awareness campaign on COVID-19 (Coronavirus). It urges people to wash their hands more often for 20 seconds. You can find their campaign on their social media channels below. Twitter:
forum.diabetes.org.uk