Boris Johnson's top aide, Dominic Cummings, has been accused of parked his tanks on the public service lawn since entering No. 10.
But the Prime Minister's shadowy back-room fixer has now gone a step further and invaded his living room as his takeover to reshape British politics continues.
Mr. Cummings and another of Mr. Johnson's top advisors, Munira Mirza, will be leaving # 10 to establish a new "control center" for the Prime Minister at 70 Whitehall, the current location of the Cabinet Office.
It is a movement that can be measured in ten meters, but can be considered a greater one in terms of intent.
In all respects, it will create a "prime minister's office" in the midst of mandarins, the Times reported.
Mr. Cummings made no secret of his desire to stir up the civil service. Last month he won an internal power struggle with Sir Mark Sedwill, the cabinet secretary who had resigned.
Mr Cummings will be leaving # 10 to establish a new "control center" for the Prime Minister at 70 Whitehall, the current location of the Cabinet Office
It is a movement that can be measured in ten meters, but can be considered a greater one in terms of intent
Mr. Cummings will be escorted to the new control room by Munira Mirza, Head of Political Affairs for Mr. Johnson
Meanwhile, Mr Cummings has also come under fire for his role in reviewing Britain's defense capabilities.
MPs warned that Mr Johnson's promise to revise defense and foreign policy was in danger of being undermined by the government's failure to address outside voices.
The integrated review of foreign policy, defense, security and international development was billed in the Queen's speech last year as the deepest and most radical reassessment of Britain's place in the world since the end of the Cold War.
However, the Commons Defense Committee warned that there would have to be much more transparency if its far-reaching ambitions are to be achieved.
With Mr Cummings reportedly playing an important role, the committee asked the government to publicly identify the key players – including those who will chair the review in Mr Johnson's absence.
The review must include a thorough assessment of the economic, diplomatic and military activities as well as the internal political dynamics of hostile foreign states such as Russia and China.
It also requires a coherent vision of how the UK armed forces will fight and operate in the future, and sets out the platforms, weapons and personnel that will be made available to ensure that vision is realized.
Committee chairman Tobias Ellwood said it was important that decisions be based on "a clear view of the world and a detailed vision of the UK's role in it" rather than "short term economic considerations".
Number 10 has described the integrated review as the most comprehensive review of policy since the end of the Cold War. However, we are concerned that the gap between that expectation and reality is widening, ”he said.
“In order to ensure that the review has a strategic approach, there is a need to be more involved and consulted with external stakeholders. However, so far the committee has seen little evidence that this happened.
The Defense Committee, along with colleagues on the Foreign Affairs and International Development Committees, has repeatedly called for clarity and transparency from the government. These calls were temporarily left unanswered.
& # 39; There are still a number of unknowns, including the key players, that are the focus of the review. A policy review of this importance should not be done behind closed doors. "
A government spokeswoman said: "As part of the integrated review, the government will issue a call for evidence on Thursday that will allow us to hear from the public and our stakeholders to inform about the long-term strategic goals of our international politics and national security. rooted in our national interests
& # 39; The integrated review will cover all aspects of international and domestic security policy, such as defense, diplomacy, development and national resilience. It will also consider the impact of COVID-19 and set a strong direction for recovery both domestically and abroad. & # 39;