2 x old wooden planks (Romsey Ward CB1)

I hope someone can use these, as I have no need for it, and I have no idea how to get rid of it: two pieces of wood, one more than two metres and another one metre long. They are about 3 cm thick and very heavy. I tried to saw the smaller one to fit it into the green bin but it's stronger than the small saw I have. Would they be of any use to someone? If you need to saw them to smaller size in our garden, that's fine with me. Thanks for reading :)