The human race has had its day.
The Day of the Triffids (2009) is a BBC two-part TV mini-series adapted from John Wyndham's novel of the same name.
Synopsis: London, near future. Global warming has been solved by replacing fossil fuels with triffids oil. Triffids are large, mobile carnivorous plants from Zaire, Africa. In London, they are farmed in secure buildings for oil extraction. Working on these plants is Dr. Bill Masen (Dougray Scott).
One day, with most of the world population blinded by solar storm and the triffids set loose due to power failure at the farms, Bill meets Jo Playton (Joely Richardson), a BBC news presenter. After going through some rough patches, Bill and Jo team up and plan to reach out to Bill's father, Dr. Dennis Masen (Brian Cox) who's also a triffids researcher. Unfortunately, their plan is interrupted by Torrence (Eddie Izzard) who, along with Major Coker (Jason Priestley), has planned to gain control of London.
This is a solid 3-hour sci-fi fest. Although the storyline is not something out of the ordinary - apocalypse, engineered plants gone bonkers, some heroes trying their best of luck to save the world - it's still pretty entertaining.
I'd say the main contributing factor is the powerful performance by the cast, especially Dougray Scott, Joely Richardson, and Eddie Izzard. Izzard is the stocky megalomaniac whom you'll either hate or like for being such a prick in the story.
Overall, this is a pretty good production by BBC. If you want to watch something British, you might want to give this movie a try.
Other recommended British movies are Shaun of the Dead (2004) and Attack of the Block (2011).