Wasp nest?

Wasp nest?

Observation - Wasp nest? - UK and Ireland. Description: Firstly, apologies for the terrible phone photos. This small nest was found during a dormouse survey, in an old dormouse nest, within a dormouse box. The grubs were still active but there was no sign of an adult. We assumed this was a wasp nest of so

Firstly, apologies for the terrible phone photos.

This small nest was found during a dormouse survey, in an old dormouse nest, within a dormouse box. The grubs were still active but there was no sign of an adult. We assumed this was a wasp nest of some type but can anyone confirm that or better still, narrow down the species?