Why do you think the UK wouldn't be able to arrest him if he was an Australian senator? Some IRA terrorists were elected to the UK parliament while in prison. They still had to stay in prison. (the UK changed their laws to prevent anyone running for election if they are currently in prison)
Sure, but it shows the UK government has no problem jailing UK parliamentarians. What makes you think they'd act differently for Australian parliamentarians?
Sure, but it shows the UK government has no problem jailing UK parliamentarians.
The British government would hardly protest British laws being applied to British citizens!
(Maybe you're thinking about some sort of separation of powers? Google suggests this isn't the case: British MPs can can be arrested, tried, and sentenced to prison, all while still in office. Apparently if the conviction is longer than 12 months, they are automatically (?) expelled from parliament.)
