Found on rose plants. A guess it may be a gall?
No interactions present.
And it's caused by a wasp, so really ought to be re-classified as an Invertebrate.
They tend to fade with age - this lovely red colour becomes paler. Eventually other organisms (some just seeking a home, others parasitising them) will move in.
Lat/Lng: 53.629, -3.0426
OS grid ref: SD311152
Found in sand dunes.