No interactions present.
I would say these are far too small to be fox. Other animals will feed on insects at the right time of the year including hedgehogs, stoats and weasels.
However, I am not seeing anything which could rule out a bird pellet such as little owl which specialise in eating invertebrates.
The trouble is the droppings are too old and broken up to confidently identify, sorry.
Visit the iSpot Yorkshire forum for information on events, issues and news relating to 'God's own country'
Lat/Lng: 51.5, -3.6
OS grid ref: SS9485