Decanter magazine has fully updated its Wine Investment section on www.decanter.com.

Compiled by journalist John Stimpfig, it provides an excellent introduction to the subject and covers a number of important issues, such as storage, provenance and getting proper independent valuations.

Regarding the latter, he writes: "Serious investors and collectors who require more current, historical and analytical price and market information would be well advised to subscribe to one of liv-ex.com's products at www.liv-ex.com."

You can view the various Liv-ex Cellar Watch packages here.