If you’re having problems paying your rent, speak to your landlord, They might be sympathetic and accept late or reduced rent.
Shelter have a template letter tool to help negotiate a rent reduction – see https://england.shelter.org.uk/housing_advice/private_renting/how_to_negotiate_a_rent_reduction_during_the_coronavirus_outbreak
You can also find out more about dealing with rent arrears from Shelter https://england.shelter.org.uk/housing_advice/eviction/how_to_deal_with_rent_arrears
Unlike mortgage payers, renters don’t have the option of a payment ‘holiday’,