Here are a few of my favourite things. Plus you can get music, and other items like DVDs and books in the Miscellaneous section. Hope you find something you like.
The complete first series of Torchwood on BBC DVD
Link to Amazon UK and buy Torchwood: Complete BBC Series 1 Box Set  [DVD]
You can also buy Torchwood Series 1 on Hi-Definition Blu-Ray. Click this link: Torchwood - Series 1 Box Set [Blu-ray]