Mako Vunipola says England have learned the hard way not to underestimate Japan

Mako Vunipola is aware of the danger facing England against Japan (Adam Davy/PA)

Mako Vunipola admits the end of Alex Lozowski’s England career following a mistake against Japan serves as a vivid reminder of the danger in underestimating Saturday’s opponents.

Four years ago Lozowski missed a tackle on opposite number Ryoto Nakamura and Eddie Jones reacted by replacing the Saracens centre at half-time and never picking him again.