Ukraine president also due to meet other European leaders as he attempts to mitigate fallout from Washington fiasco

• Live reaction to Zelenskyy’s clash with Trump and Vance

Volodymyr Zelenskyy has said America’s support is crucial as he arrived in the UK to meet Keir Starmer after his clash with Donald Trump.

The Ukrainian president will meet the prime minister in Downing Street on Saturday afternoon before a defence summit of European leaders on Sunday.