A Royal Air Force C-17 carrying President Zelensky has just touched down at Stansted Airport.
The UK government said he would meet British Prime Minister Rishi Sunak and make a speech in Parliament later.
It has also announced that British training of Ukrainian forces will be expanded to cover fighter jet pilots and marines.
It’s also expected the UK will announce fresh sanctions targeting Russia later.
Plans have been announced to train Ukrainian pilots to fly Nato-standard fighter jets in the future, a key request from Ukraine.