The first is Geastrum striatum with a distinct collar on the underside of the bulb. The second G pectinatum without the collar.
Caution: Do NOT use iSpot to identify fungi to eat!
Some fungi are very poisonous so a mistaken ID could have serious consequences.
No interactions present.
Might be an idea to add the observation twice, once for each of the species since you know which each is.
One of those cases where it would be useful to put an arrow showing the collar (or lack of it).
In this case however it is the useful comparison side by side and the sort of thing I keep in favourites for reference. The genus would be found in a search.
Certificate in Contemporary Science (Open)
Lat/Lng: 54.046, -0.9572
OS grid ref: SE683616