Thank you for taking the time to clarify that BBD, do you have any experience of what they typically charge on top of the sale price at auction?

I'm afraid not, but then I've only ever been browsing rather than seriously considering a purchase. I've also not looked at Japanese auction houses (for the same reason). The two websites I mentioned will typically include shipping prices to the UK (usually Southampton if memory serves), but I you'd have to deal all the paperwork and customs charges yourself, and you'll also need to arrange the fog light and underseal (though given most Japanese imports seem to arrive there, it is likely there are companies in Southampton who do this)

If you can get one through a reputable import specialist, it may work out more expensive than doing it yourself, but maybe not. After all it is reasonable to assume they would be able to ship "your" car over, along with a dozen others, for less than you can individually. What is not in doubt though is that getting one through an importer will be a lot less hassle for you, all you need to do is pay for it!