Humans are amazingly good at killing.
28 Days later is as close to a real world example of a Zombie Viral outbreak as you can ask for.
The UK is a very densly packed country, an outbreak would spread fast creating Millions of Zomibes.
Imagine if swine flu mutated, it destroys the higher brain functions leaving just primal instincts including massive hunger pains that never stop, sending the human into a constant fit of rage!
You now have a human who is basically an deadly animal who cant stop eating!
Humans are quite capable of killing Bears, Lions, Tigers, Hedgehogs, Sharks and Wolves etc in fights to the death with thier bare hands.
Short of carpet boming everything, Zombies and uninfected Humans alike, a Zombie Viral outbreak would be devastating in the UK.
Look at America, it took them 5 days to get water to New Orleans after the hurricane hit!
The military is a big lumbering machine, too slow to stop a Zombie outbreak.
If the Z-Virus is not airborn then humans have a good chance if they just stay put, board up windows and doors, stock up on water and tinned food and make some make shift weapons!
If the Z-Virus is Airborn, well unless your immune then I suggest using salt and pepper on your human meat!
Emergancy Response Plans to date:
1001 Zombie Plague
1004 E.L.E Event
1005 Alien Invasion
1006 Mother In-Law Vist
1007 Global Flooding
1008 Global Warming (ERP Not to be used, Global warming is unlikely in this century)
1009 Insect rebellion
1010 Supernatural/Hell on Earth
1011 Machines Take Over (There is no Spoon)
1012 Pandora Event
1013 UK Military Project "Alpha-9RE4Z3V77-Omega" Failure
1014 G.O.D Event