Ronnie Sunshines is a camping store based in Heartfordshire. I buy stuff from them from time to time, so I'm used to receiving the occaisional promotional email from them. But I was somewhat surprised to see that they're now selling equipment in preparation for a possible zombie invasion...
Some of the items include paper zombie shooting targets, machetes, crossbows and lock knives, like the ones used on "The Walking Dead". Plus, if you can afford it, they also sell this rather nice "Zombie Killing Kit", made by 'Armex'. Which features a Firecat 150lb draw recurve crossbow, a Walther black-tac tanto flat dark earth lock knife, a striker slingshot and a Walther match-tac 1 machete.
Here's a link to the Zombie Killing Kit http://www.ronniesunshines.com/zombie-killer-kit.html
For other zombie killing items, and general camping and bushcraft equipment, checkout their website at http://www.ronniesunshines.com/