[question] DVD buying guide in UK?

[sheruken]

Hey all,
I am from India and I want to buy the DVDs of few American TV Shows (The O.C. and 24 *both Season 1 and 2 for both these shows*). Now generally ordering it online is a real pain, as the customs here are aweful, even the import duty on DVDs is too high. But I have a friend who's visiting England now. And I want him to get me these DVDs, but its been a while since I've been there, so I dont know where or which stores to look for, so he can get these shows easily. I also wanted Entourage Season 1 (and 2 if it is out) on DVD, can someone tell me if it is easily available in England? Like I know in the USA its available in every Target / Wallmart / BestBuys etc.. But not too sure about UK. He's somewhere near London, not sure where exactly, but can someone please help??
Thanks!