Hi,
As you have won the item and the seller is not responding you, I suggest you to obtain their phone number by requesting it from eBay. Then you can call them easily. Here is the link from which you can obtain the contact information of the seller:
http://search.ebay.co.uk/ws/search/AdvSearch?sofocus=bs&sacat=-1&catref=C5&sspagename=h:h:advsearch:Uk&from=R7&nojspr=y&fsop=1&fsoo=1&fcl=3&frpp=50&sofindtype=9&pfid=
You have to just enter the User ID and the item number and the contact details would be forwarded to your registered email address.