If arrested, they should give proper details, charges they have levied against these people. Moreover, Indian Embassies in both countries (UK, Aus) must ask details and give feedback of the same to Indian govt. and people. Its not illegal to travel on one-way ticket..one can again purchase ticket from India to Aus.. only illegal, if person has not resigned and doesnt have re-entry permit for his visa (re-entry to Aus)..
