Takaichi said the UK and Japan had agreed to ‘accelerate the progress of GCAP’ and that the UK and Japan were in a ‘quasi-alliance’.

Japanese prime minister Sanae Takaichi visited Starmer to develop security ties with the UK, just months after Starmer visited Tokyo.

The Prime Minister Keir Starmer will welcome his Japanese counterpart Sanae Takaichi to Downing Street on Sunday ahead of the crucial G7 summit with other world leaders next week

Keir Starmer is set to meet with Japanese prime minister Sanae Takaichi on Sunday at Downing Street

The Japanese prime minister discussed the billion-dollar jet programme during a meeting in London with British Prime Minister Keir Starmer.

Takaichi said the UK and Japan had agreed to ‘accelerate the progress of GCAP’ and that the UK and Japan were in a ‘quasi-alliance’.