In case you're interested:
www.urbandead.com
Or a better, non-zombie related MMORPG:
www.nexuswar.com
I think the zombies depicted in Resident Evil are much more like it. Zombies should be slow, stupid, and primitive. The zombies in 28 Days Later and Dawn of the Dead are too fast...they're more exciting but I find it harder to 'believe'.
My survival strategy would consist of finding an easily barricadable safehouse with just a small group of people...the UK is probably quite safe anyway :P