[Lee.]

Firstly, I would go all "Home Alone" on them and booby trap my house and garden to make entry as tricky as possible, including running high amounts of electricity to all exterior door handles...

Then I would move everything in the house (that would fit through hatch) into the attic including all food and drink and a hammer.. I would then climb into attic myself, ensuring that I pulled the step ladder up with me and get comfy whilst I awaited attack.. For food, I would microwave soup/beans/peas/sweetcorn.

If said zombies were to get past my clever booby traps, I would see them coming through hatch and simply throw everything I had taken up with me at them from a height.. Obviously I would begin with heavy items of furntire but if they kept coming even after I had dropped everything, I would use my hammer to hammer them as they tried to reach hatch...

I've just realised I'm not so sure if I have plug sockets in my attic, so my microwave plan may have to be ditched.. I would still take it mind you as it is quite heavy and I am sure would do a lot of damage..