Congrats on trapping it.
Now don't clean the trap after you've got rid of this mouse. It now has genuine mousescent. The others may like it better now.
There don't seem to be others but we will reset the trap anyway. I think it was Teaspoon - that dark blob in there is a Dove Bar chocolate egg.
Py reports that she let Teaspoon out down by the canal, across the road from some buildings, in a nice copse of trees with nooks and crannies in which to hide. Teaspoon ran away from Py at a 90 degree angle which took her through traffic across the street to the buildings. She made it safely. Py left the food from the trap but we agreed it's unlikely that Teaspoon will come back for it.
I am worried that Teaspoon was keeping the fabric chewing mice away, and now those will come back, but those were vulnerable to the snap traps so maybe it's all good.