Urban garden which is visited by foxes.
No interactions present.
Could this be a bird white deposit could be uric acid in bird faeces ? large bird ? heron or similar
I was thinking that it might be a bird dropping too (possibly a woodpigeon's as they leave similar looking things on my lawn).
This is definitely not a mammal dropping. I agree it is most probably a bird dropping, which one depends on scale.
Try re-posting this on the birds forum of iSpot.
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Lat/Lng: 51.6, -2.4
OS grid ref: ST7598