President Donald Trump has landed in the United Kingdom for his historic second state visit, combining royal ceremony with high-stakes diplomacy.

The trip opened with warm words about his bond with Britain, major technology investments, and preparations for one of the largest royal welcomes in recent memory.

Speaking before departure on Air Force One, Trump called the visit an “honour” and described his relationship with the UK as “very good.”

“The main purpose of the visit is to see my friend, King Charles,” Trump said, praising the monarch as “an elegant gentleman” who represents his country “so well.”

Upon arrival at London Stansted Airport, Trump and First Lady Melania were greeted by Foreign Secretary Yvette Cooper before heading to Winfield House, the US ambassador’s residence, for the night.

Royal pageantry at Windsor

On Wednesday, Trump will join King Charles, Queen Camilla, Prince William, and Catherine at Windsor Castle for a ceremonial welcome. The schedule includes a carriage procession, gun salute, and military inspection, followed by a lavish banquet in St George’s Hall.

The event will feature the largest guard of honour ever assembled for a state visit, with 1,300 members of the Army, Royal Navy, and RAF taking part. A joint flypast by US F-35 jets and the Red Arrows will highlight military cooperation between the two allies.

Trade and technology ties

The visit coincided with the announcement of a £31 billion US tech investment in the UK, including £22 billion from Microsoft for projects in artificial intelligence, quantum computing, and nuclear power.

Alphabet, Google’s parent company, also confirmed a £5 billion investment in AI research. In addition, Washington and London will sign a new agreement to accelerate nuclear power development.

UK Prime Minister Sir Keir Starmer said the deals would help “create highly skilled jobs and put more money in people’s pockets.”

However, hopes of removing the 25% US tariff on UK steel exports remain stalled.

Diplomatic and security dimensions

Beyond economic talks, the UK government aims to use the visit to encourage the US to maintain its commitment to NATO and support for Ukraine.

Security is tight around Windsor, with Thames Valley Police confirming four arrests after anti-Trump protestors projected images of the president and Jeffrey Epstein onto the castle walls. Police warned they treat “any unauthorised activity around Windsor Castle extremely seriously.”

Unlike previous state visits, Trump’s schedule keeps events behind closed doors, mainly within Windsor Castle and the prime minister’s country estate, Chequers. While US flags now line Windsor’s streets, the president is unlikely to see them.