Same here mate, please post back if you have found anything useful and I will do the same.
Been searching for 1-way travel insurance to cover myself while getting sorted in Australia; but most of the UK insurance online quote systems are not friendly towards 1-way / emigration policies.
Haven't found anything that can simply provide a one-way quote as the pricing is all based around the return dates.
Would appreciate if anyone else has any advice.
Cheers.