By Rosemary McCabeBBC Journalist

Getty Image  Collage of Larry the cat, the door of No 10 Downing Street, a police man, the Downing Street road sign and staff looking out the windows at Downing StreetGetty Image

Out with the old, in with the new.

Nothing represents the rapid, ruthless business of politics like removal vans at Downing Street.

Moving a new prime minister – staff, family, pets and paraphernalia – into 10 Downing Street is a complex feat. Here’s how it happens.

Sunaks out, Starmers in

Reuters Sir Keir Starmer speaking outside No 10 after the 2024 Labour election victory Reuters

Prime Minister Keir Starmer speaking outside No 10 after the 2024 election

The first thing to know: it happens in a day.

Former Prime Minister Rishi Sunak vacated 10 Downing Street on Friday after Labour won a landslide victory in the general election.

Shortly after, new PM Sir Keir Starmer and wife Victoria Starmer arrived at No 10.

“The work of change begins immediately,” Mr Starmer said outside the iconic black door, before walking into his new office and home.

The couple’s children, unlike some of former prime ministers, did not feature in the photograph on the Downing Street steps.

That’s because the Starmers have chosen to keep their 16-year-old son and 13-year-old daughter out of the public eye.

Stepping inside

A first stumbling block for a new PM can be getting through the front door.

Getty Images  Tony Blair and his family outside No 10 after the 1997 election  Getty Images

Tony Blair and his family after the 1997 election

Rather than have the PM fumble for their keys, Downing Street security staff open the door as soon as the prime minister turns to face it.

That’s not always obvious, as one aide to former Labour PM Tony Blair recalled in 2021.

“Tony finished his speech. He’s doing his wave, and the family and Cherie is there and it’s all lovely,” said Kate Garvey, recalling the moment in 1997 when Mr Blair took office.

“But I could see he had a hesitation.

“And I knew it, the door! How does the door open?”

With an eye on the CCTV monitor and a hand on the door, the in-house staff spring into action when they get their cue, a detail that might be easy to forget in the whirlwind of an election victory.

Getty Images  David Cameron and wife Samantha are applauded upon entering Downing Street Getty Images

David Cameron and wife Samantha are applauded upon entering Downing Street

Once inside, the prime minister is greeted by Downing Street staff. These include civil servants, politically appointed special advisers, and permanent staff including chefs and security guards.

Staff usually line the corridors and applaud the new leader on their first day.

Staying at No 10 or No 11?

The prime minister taking up residence at No 10 is a historic moment for a new government – but the leader may end up living in the house next door.

Starting with the Blair family in 1997, prime ministers including Boris Johnson and David Cameron have often chosen to live in the more spacious four-bedroomed flat at No 11.

Getty Images  Samantha Cameron sitting with Michelle Obama at Downing Street in 2011Getty Images

Samantha Cameron sitting with Michelle Obama at Downing Street in 2011

Of course a permanent resident, unfussed by the rise and fall of governments, is Larry the cat who was adopted and brought to Downing Street in 2011 for his mousing skills.

Boxes, boxes, boxes

“It’s their home and it’s quite a big home,” said Stephen Morris, managing director of the removal firm which packed the possessions of the Blairs into 2,000 boxes when they left Downing Street in 2007.

“You don’t let people know what it is you’re moving,” Morris said. “Because you hear and see things that a newspaper would like!”

Getty Images Removal men from Stephen Morris Shipping remove the last of the possessions of Tony Blair and his family Getty Images

Removal men remove the last of Tony Blair’s possessions from Downing Street

Politics can move fast, and so must removals.

Morris recalls receiving a phone call in 2010 the evening Prime Minister Gordon Brown resigned, asking his team to be ready to start moving the next day.

Curtains, carpets, coats of paint

Prime ministers can give Downing Street a fresh lick of paint, making use of an annual public grant of £30,000 to carry out renovations.

But Boris Johnson and his wife Carrie were criticised when their extensive revamp of the flat above No 11 cost more than £200,000.

Mr Johnson and his wife wanted to transform the flat from previous Prime Minister Theresa May’s “John Lewis furniture nightmare” into a “high society haven”, according to the society magazine Tatler.

The work was initially paid for by the Cabinet Office, but £52,000 was given to the Conservative Party by Tory donor Lord Brownlow to cover the bills.

The Electoral Commission fined the Tory party and found it had failed to accurately declare all of Lord Brownlow’s donations towards the renovation.

Getty Images  Boris Johnson leaves Downing StreetGetty Images

Boris Johnson leaves Downing Street

A political powerhouse and family home

Once he’s moved in, Downing Street will be where Sir Keir conducts his most important duties, such as holding cabinet meetings and welcoming foreign leaders. But it’s also a family home, hosting birthday parties and space for relaxation.

Getty Images Portraits of former prime ministers at No 10 Downing Street  Getty Images

Portraits of former prime ministers hang inside the residence

It’s a “strange dynamic”, said Jack Brown, a former researcher in residence at No 10.

“It’s both a place of work and family… and it’s important to the prime minister’s premiership that they and their family feel comfortable there.”

The family of Harold Macmillan, Conservative prime minister from 1957 to 1963, reportedly enjoyed their time in Downing Street, although there were strict rules about children riding bikes through the corridor during cabinet meetings.

But former Labour Prime Minister Harold Wilson and his family found “disturbances by officials” difficult. Mary Wilson installed a doorbell in her second-floor rooms to stop civil servants from intruding.

Getty Images  Rishi Sunak with his wife Akshata Murty and their daughters Anoushka and Krishna putting candles outside of No 10 to mark Diwali Getty Images

Rishi Sunak with his wife and daughters putting candles outside of No 10 to mark Diwali

Friday nights in the Starmer household are family-first.

“We’ve had a strategy in place – and we’ll try to keep to it – which is to carve out really protected time for the kids,” Sir Keir told Virgin Radio. “So on a Friday – I’ve been doing this for years – I will not do a work-related thing after six o’clock, pretty well come-what-may.”

What these Friday nights entail in the new home will be one of the many choices facing the Starmer household.

Over the next few days, they’ll have a lots of boxes to unpack. And one more critical, if quieter, task for the new prime minister: turning the heart of political power into a family home.

Reuters Prime Minister Keir Starmer and his wife Victoria arrive at Number 10Reuters

Prime Minister Keir Starmer and his wife Victoria arrive at Number 10

Additional editing and production by Alastair Reid and Tom Finn.

Designs by Jenny Law and Beta Yee.

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