It is illegal unless you have the permission of the person to whom the stuff in the skip belongs.
It distresses me to see useful stuff thrown away. I once knocked on someone's door to ask about some bricks I'd spotted which looked quite good. They were new bricks, being stored in the skip awaiting the bricklayer building an extension. Oops (but I was glad I had asked first.)
My most recent acquisition from a skip (with permission) was a quantity of 30mm stainless steel tubing, new and undamaged.
Putting rubbish into a skip you haven't paid for is no different from fly tipping, and it adds to someone else's costs for rubbish disposal: despicable.
It distresses me to see useful stuff thrown away. I once knocked on someone's door to ask about some bricks I'd spotted which looked quite good. They were new bricks, being stored in the skip awaiting the bricklayer building an extension. Oops (but I was glad I had asked first.)
My most recent acquisition from a skip (with permission) was a quantity of 30mm stainless steel tubing, new and undamaged.
Putting rubbish into a skip you haven't paid for is no different from fly tipping, and it adds to someone else's costs for rubbish disposal: despicable.