The document also confirms that healthcare workerswho have symptoms of COVID-19 would not necessarily be tested.
Chief medical officerChris Whitty has previously said up to 80% of the population could catch the virus in a worst-case scenario.
On Sunday, the Health Secretary Matt Hancock said the elderly could be asked to self-isolatefor up tofour months.
Transport SecretaryGrant Shapps said on Monday that people over the age of 70 will be asked to self-isolate "as and when the moment is right" - but that they would still be able to go outside and "walk the dog". He said: "We will ask people to do that as and when the moment is right." Those who refuse to self-isolate or fail to comply withrestrictions could> Education SecretaryGavin Williamson is due to meet school leaders to discuss the implications of closing schools and postponing exams.