Donald Trump arrives in Britain

US President Donald Trump has landed in Britain to start a four-day trip to a country he has described as a "hot spot" in turmoil due to a political crisis over its decision to leave the European Union.

Air Force One landed at London's Stansted Airport early afternoon on Thursday.

Later in the day, Trump will travel to Blenheim Palace, the 18th-century stately home where Britain's World War II leader Winston Churchill was born and spent most of his childhood.