NICE Guidelines on managing Covid-19 including updates on assessment, management and therapeutics.
Local clinical guidance: assessing symptomatic patient with Covid (SEL developed- updated Dec 2021)
Remote assessment in primary care : BMJ paper from March 2020 about assessing shortness of breath using a series of narrative questions remains sound.
Pan-London Primary and Community Care Respiratory Resource Pack during COVID-19 Version 8 (note this is the latest version but is from March 2021).