King Charles III has invited the French leader and his wife, Brigitte, on a three-day official visit during which Macron is to hold joint discussions with Prime Minister Keir Starmer at the 37th Franco-British Summit on Thursday.
Talks will focus on aid to Ukraine, joint efforts to halt illegal migration crossing the Channel, and strengthening defence cooperation between the two countries.
"This is the first state visit to the United Kingdom by a European Union head of state since Brexit," the Elysee Palace said on Friday, referring to the UK's 2016 vote to leave the bloc.
"And, especially, the first since Prime Minister Starmer signalled what he called a 'reset' of relations between the United Kingdom and Europe,", it added.
There were simmering political tensions between Paris and London in the immediate aftermath of Brexit under the previous right-wing Conservative British government.
But there has been a new warmth in relations under the centre-left Labour government led by Starmer, and the two countries now lead European efforts to find peace for Ukraine.
Buckingham Palace confirmed on Friday that Macron would formally address the British Parliament on Tuesday, following in the footsteps of his predecessors, Charles de Gaulle and Francois Mitterrand.
The king will host Macron and his wife for a state banquet at his Windsor Castle residence, west of London, where the couple will also stay.
While in Windsor, Macron will privately visit St George's Chapel to lay flowers on the tomb of the late Queen Elizabeth II.
-'Reassurance force'-
During the visit, Macron and Starmer will host the 37th Franco-British Summit in London on Thursday, where they are set to discuss opportunities to strengthen defence ties between the two countries in response to Russia's full-scale invasion of Ukraine.
The agreements will be "adapted to this profoundly changed strategic reality", the Elysee Palace said, without offering further details.
Macron and Starmer will also co-chair talks bringing together countries "willing" to strengthen Kyiv's defences against Moscow.
The two leaders will speak with Ukrainian President Volodymyr Zelensky, as well as German Chancellor Friedrich Merz and Italian Prime Minister Giorgia Meloni, the French presidency said.
This comes after the United States, Ukraine's biggest military backer since the launch of Russia's full-scale invasion in 2022, said Tuesday it was halting some key weapons shipments to Ukraine.
Russia launched its largest-ever drone and missile attack on Ukraine overnight on Friday.
The summit will touch upon the deployment of "a reassurance force" to Ukraine after a ceasefire and how to "increase pressure" on Russia to accept an unconditional ceasefire, the Elysee Palace said.
Another topic high on the agenda is agreeing on a strategy to halt migrants making perilous small boat crossings of the Channel, a key political issue in the UK.
As more small boats land on English shores, and the UK government comes under mounting pressure from the far right to tackle irregular migration, London has pressed Paris to do more.
In recent weeks, France said it is considering stopping migrant boats in its shallow coastal waters, though the move raises safety and legal issues.
And on Friday, the British government said it welcomed footage showing French police stopping a small boat carrying migrants from setting off across the Channel.
The French president's visit follows King Charles's state visit to France in 2023, which was widely regarded as a success that helped boost relations, reports BSS.
The last state visit by a French president to the UK was made by Nicolas Sarkozy in 2008.