There are major changes coming to UK DVD rental with the merger of top two companies Screenselect and Lovefilm, as together they'll control well over half the online market. It will be interesting to see how this goes down, as the company is retaining the Lovefilm name but keeping the Screenselect CEO; Lovefilm has a worse customer service record and its Fair Use Policy throttling back rentals from high volume renters has riled many--so again, will be interesting to see how this new supercompany performs and with wehat T&Cs.

However, nearest rival Blockbuster has dramatically improved, as has relatively new entrant MyMovieStream, and Amazon, Moviemine, Cinema Paradiso are all good, among others, so there's still a fair amount of quality choice.

For a more comprehensive rundown of the UK rental sites (41 at last count), including a blog on the industry, see:
UK-DVD-Rental-Guide.com