Is this an old spider's nest ?

Is this an old spider's nest ?

Observation - Is this an old spider's nest ? - UK and Ireland. Description: I found this under the lid of a cardboard storage box that I got out of the loft this morning. I'm guessing it's something to do with a spider but I cannot find any similar images on the web to confirm what it might be. It's about 5cm x 5cm. Can anyone

I found this under the lid of a cardboard storage box that I got out of the loft this morning. I'm guessing it's something to do with a spider but I cannot find any similar images on the web to confirm what it might be. It's about 5cm x 5cm. Can anyone help please ?