I was offered the same investement oppertunity and I declined this as I didnt have sufficient confidence on the market. There are couple of factors you need to be aware of.
The reputation of the company who offer this service, as there are number of wine investment companies who have gone busted. (If I am not mistaken these companies are not governed by institutions)
Also Parker points given for the respective wine. Wine market is very complex and finding a good wine to invest is quite difficult as we will be relying on highly volatile market.
Unless you are certain about the company and the wine your investing I would not recommend this. Do some comprehensive research before you proceed.

Has anyone invested or know any information on Bordeaux UK Limited? in the past I have taken a look at this company and now i get calls from them every 2 months or so telling me about their available wine investments. On the phone they seam very pushy and convincing to make an investment with them. I've not found mush information on the internet about this company.