The Government has now released official guidance specifically for those who provide unpaid care to friends or family as part of their response to the current Coronovirius (Covid-19) crisis. see attached link below.

The main point it highlights is the need to create an emergency plan with the person you care for to use in circumstances where help from other people may be needed top deliver their care

https://www.gov.uk/government/publications/coronavirus-covid-19-providing-unpaid-care/guidance-for-those-who-provide-unpaid-care-to-friends-or-family