From the professionals themselves, I have seen FAQ About Time Travel, and loved it, as well as Death at a Funeral...oh and also a huge Python fan. Any suggestions on other British Film that would be good?
shareNot British, but it kind of reminded me of Dude, Where's My Car.
shareStalled (2013) was a cool one, with a similar feel as this film. It's with zombies though not timetravel.
http://www.imdb.com/title/tt2140429/
I know I'm a bit late to this conversation, but I would recommend Doghouse and Attack the Block. They're not quite the same; Doghouse is a horredy (horror-comedy), and Attack the Block is a sci-fi, but with aliens, not time travel. Attack the Block has Nick Frost (obviously Ed, from Shaun of the Dead) playing a small role, and Doghouse stars Danny Dyer (also in Devil's Playground, which is a pretty decent zombie flick for its low budget and lesser known actors) and Stephen Graham (Snatch). I have no idea why both of them are only rated at just above a 6 on here; that's ridiculous. They were both awesome!
Note: Doghouse is pretty sexist, but still effing hilarious. I'm a woman, and it didn't offend me in the slightest; people really gotta lighten up! :D