opposing view, it will be harder to sell as an import, prob OK second hand, IF you get the right buyer, but when he knows is import he will want prob 500 - 1000 off Uk supplied retail, plus you will not sell into the dealer network if you want to part ex, they will be very reluctant. I used to run a car import business specialising in VAG and my GTI is a RHD import from sweden. went to look at an "R" 2 weeks ago, the dealer said no way when he knew mine was an import, or at least so low a price as to be in effect no way.
Sell in Oz, save yourself £1000 transit, find a mint car here, and don't lose another £500 - £1000 when you come to sell on. Its a no brainer! Plus you won't have any SVA nausea, a hour of an OCD guy nit picking over every little thing, not to mention the travel to a inspection centre and all the paperwork - my mates bike failed because the headlight was permanently on and it didnt have a parking light - Doh
Like I said its a no brainer, sell and buy over here.