This is a very fast moving emergency situation, so please note that this response was based on the developments and advice given at the time.
Through the resilience arrangements in place to respond to COVID-19, my Deputy Mayor for Fire and Resilience, Dr Fiona Twycross AM, who is one of three co-chairs of the Strategic Coordinating Group, is in daily discussion with both the NHS and Public Health England(PHE).
These agencies are focussing on maximising capacity to conduct timely and accurate testing and have established a testing capability for a new virus and completed over 26,000 tests within a very short period. If these experts determine that it is necessary to develop a self-testing service, I will support them however I can. Within London, the NHS have established 12 Community testing facilities, 19 drive-through facilities and 12 home team testing facilities to support their ongoing testing for COVID-19.