Buy British!
http://www.cairnomohr.com/ online shop for the Cairn O'Mohr wines from Perth - award winning wines and the sparkiling strawberry is the absolute must have for Cristmas if you fancy a rosy time....
Also recommend the Chapel Down vineyard - world beating quality wines - they have a rose now -
http://www.chapeldownwines.co.uk/shop/ bit more maybe than you have suggsted spending but my goodness you'll get a good wine for the money!
There are 400+ wineries in the UK now producing so much more in quality than the dreadful stuff that used to pass as wine from the UK 30 years ago.
Have a look at the info on
http://www.english-wine.com/ as a starter and make a trip to your local vineyard your next day trip....