Patients requesting exemption for wearing face covering.

Government guidance suggests that there is no requirement for evidence for medical exemption from wearing face coverings and that it is sufficient for a person to self-declare they are eligible for exemption in instances where a face covering is required. TFL have instructed passengers who believe they are exempt from wearing a face covering for a reason on the TFL exemption list, to print out an exemption card from their website and display it on clothing or a lanyard. It is also acceptable to display it on a mobile phone. https://tfl.gov.uk/campaign/face-coverings.