BREAKING: Vice chair of UK Conservative Party, Bim Afolami has resigned and calls for Boris Johnson to stand down

So far these people have resigned

BREAKING - Resignations so far from UK government of PM Boris Johnson

Rishi Sunak MP (Chancellor)
Sajid Javid MP (Health Sec.)
Bim Afolami MP (Vice Chair)
Jonathan Gullis MP (PPS, NI)
Saqib Bhatti MP (PPS, Health)
Andrew Murrison MP (Trade Envoy, Morocco)

Johnson says he will find new ministers.

A Parliamentary Private Secretary (PPS) is appointed by a minister to be his or her assistant. He or she is selected from backbench MPs as the 'eyes and ears' of the minister in the House of Commons. It is an unpaid job but it is useful for an MP to become a PPS to gain experience of working in government.