I'v tried to pull together a guide to the UK Online DVD Rental companies. Hopefully you'll find it helpful. I'd also love to hear what you think, especially if you have good or bad exeriences of renting DVD's online. Pete http://www.uk-dvd-rentals-guide.co.uk
There are many guides out there--though the address is similar, the one below is much larger, with 41 sites listed, the most I've seen--including some special offers (Screeselect 30 days free trial, 21 day from Lovefilm) as well as a forum, blog, customer comments, etc. Also cited in mainstream press and radio interviews. http://UK-DVD-Rental-Guide.com
I agree there is alot of advice and much of it well informed. Its definitely a sign of the rising popularity of DVD rental. The high street days are numbered thats almost a certanty.