Spider egg sac?

Spider egg sac?

Observation - Spider egg sac? - UK and Ireland. Description: Found this in some dry tussocky grassland on Thundry Meadows, Elstead Surrey while doing a nest search for harvest mice. Any ideas?

Found this in some dry tussocky grassland on Thundry Meadows, Elstead Surrey while doing a nest search for harvest mice. Any ideas?