British Airways is to resume direct flights to Tehran later – the first UK carrier to fly to Iran for four years.
Six return flights per week will operate between London Heathrow and Tehran, which BA described as “an important destination”.
It follows the lifting of some sanctions against Iran in January and the reopening of the British embassy in the Iranian capital in 2015.
BMI was the last UK airline to fly to Iran, but the service ended in 2012.
The BA Boeing 777 is due to depart from Heathrow just after 21:00 BST.
Air France resumed flying to Tehran in April after a seven-year break. /BBC
