Maybe some of those port-drinking accountants out there can advise us.
I think this means we could get our pension funds to buy port en primeur (or even older wines) and get 40% back on the purchase price. Clearly there are complications - how the duty will be dealt with and how, in the end, we'll ensure that we can get the wine back out of the fund when we retire (presumably it would belong to the fund and as a trustee we couldn't just drink it, we'd have to sell it to the highest bidder - hopefully ourselves).
Whether we go into one or not it is worth thinking about - even for non-UK people. There already appears to be some speculative interest in good but relatively-under priced wine such as 95, 96 and 02 Claret so this development may marginally distort the worldwide market. However, as JR sensibly implies on her site, buying older top Claret like '82, for example, will be of less use as most of the capital gains have already been made there.
A 40% discount on en primeur wine does load the economics on the buy-early-and-store side.
Somehow, however, I suspect that our abstemious socialist Chancellor is going to find some way of preventing wine-lovers from such a benefit; if it is at the expense of his grandiose and expensive public projects

(As ever, I am talking about "investment" here for my purposes in terms of buying now, for pleasure later. I am not an investor in the sense that I never have any intention of actually selling anything - at a profit or not!)