drinks through customs

[GANGAN]

is it possible to buy alcohol in a Spanish supermarket and take it unopened through the Spanish customs at valencia airport

[jrtv]

No you can't, but you can buy it at the airport when you have past security.

[Buenchico]

It's not clear from your question whether you're referring to cabin baggage or hold baggage.

As far as cabin baggage goes, Jrtv is correct. The rules are the same for all EU airports:
http://www.dft.gov.uk/stellent/groups/dft_tran ssec/documents/page/dft_transsec_613514.hcsp

However, there's nothing to stop you from buying some booze in Spain and putting it in your checked-in luggage. Because you'll have paid duty & VAT in Spain, you can bring back as much as you like as long as it's for your personal use (or as genuine gifts for which you receive nothing in return).

Spanish customs won't care how much you take out. HMRC do issue guideline figures as to the maximum amounts which they would regard as acceptable imports 'for personal use'. However, these are largely irrelevant when you're travelling by air because you can't even get anywhere near these 'maximum' amounts without vastly exceeding your baggage allowance:
http://customs.hmrc.gov.uk/channelsPortalWebAp p/channelsPortalWebApp.portal?_nfpb=true&_page Label=pageTravel_ShowContent&id=HMCE_PROD_0102 21&propertyType=document

Chris

[SteveD]

You will not go through any customs control as you leave Spain.