The tubes were packed mainly because they have reduced the number of trains?
The government will act if these latest measures to pay wages for those staying home before Further locking London down.
The problem with putting all of London under quarantine is the practicality of such a large operation feeding and getting medication to people and dealing with mental and physical health of those without the virus.
what we do need is visible action taken against those who are to stubborn or stupid to stay indoors other then to exercise etc.