The three people to have been prime minister since 6 September reunited at the Cenotaph.
The House of Lords Appointments Commission blocked four applications to bring Johnson choices into the House of Lords.
Croxall had said she was 'gleeful' at the unfolding developments as Boris Johnson withdrew from the Tory leadership race.
The business secretary says Boris Johnson has a strong mandate to lead the country despite being ousted in July.
The Commons leader says she is "in it to win it" as she seeks to unite a bitterly divided Tory party.
Liz Truss quit as prime minister on Thursday triggering the second leadership contest in four months.
Boris Johnson needs to have backing from 100 MPs, but while certain people have openly backed him, will he reach the threshold?
A YouGov poll found that nearly two thirds of Britons want a new prime minister to call an early general election.
'This England' is a riveting expose of governments attempting to navigate its way through a global pandemic.