SoftBank Group

Raises questions about London’s appeal for tech IPOs

'Largest IPO of the year' hoves into view

The Japanese investor currently holds a 75% stake in Arm

Hermann Hauser believes a London listing could follow

Arm aims to raise between $8 billion and $10 billion, according to reports

Plus: The disappearance of (another) Chinese billionaire

But lobby groups have pushed back

Arm is one of the few bright spots for the troubled Japanese tech investment bank