Just a reminder, as you may not have seen the discussion earlier this year, that there are some bargains to be had buying an LS430 in Ireland.
My (long, convoluted) thread is here http://www.lexusownersclub.co.uk/forum/topic/97839-importing-and-insurance/ but the key points are road tax is over £1200 a year for big cars in Ireland, which motivates people to sell, and owners get a refund of import duty if they sell for export.
Here's an example - https://www.donedeal.co.uk/cars-for-sale/lexus-ls430-only-73k-miles/10925729
Good Luck
Jon
just been looking at prices in Ireland. Is it straightforward buying and bringing it to uk. Do I have to get a plate change and is it no problem with insurance