Looks like an Ectemnius species of Digger Wasp. I don't think they can be done to species level without a good shot of wing venation & microscope work.
Its a Hoverfly - Melanostoma sp. (probably M. scalare).
Robber-flies are much more robust flies & the Drone-fly is another species of Hoverfly - Eristalis tenax..
IDing fungi from photos can be dificult but heres a few
3 & 4 look like the start of the Giant Polypore - Meripilus giganteus
5 & 6 is the Bay Polypore - Polyporus durus
7 is the Beefsteak fungus - Fistulina hepatica
8 could be Jews Ear - Auricularia auricula-judae
10 & 11 are Russula sp.
12 could be Toughshank - Collybia fusipes - need a shot of the whole mushroom.
14 is Chicken of the Woods - Laetiporus sulphureus
15 & 16 is the Amethyst Deciever - Laccaria amethystina
17 reminds me of young Ganoderma pfeifferi
18 are Oyster Mushrooms -
They changed them from Psithyrus to Bombus years ago.
B. vestalis should have sronger patches of yellow on the side of the abdomen. I think I can make out a black tip to the tail & the abdomen looks curled which points me to B. sylvestris.
Identifying Bumble Bees is not easy for most species (& from photos) unless you can look at the genitalia.
I have just found a webpage about this species of bee & i didnt know they had there nests underground
Most Bumble Bees do. Some Bumble Bee species prefer nesting at ground level hidden in grass, the bases of bushes, heathers, trees or walls.
Bumble Bees have been around for a couple of weeks now, flying on the sunnier days. These are queens that have hibernated & are ready to start new colonies. Saw some Honey Bees last week too.
Yours looks like Bombus terrestris or lucorum - difficult to separate from a photo.
Probably a type of Nostoc - a blue-green bacterium (often incorrectly called a blue-green alga). Usually invisible to the naked eye, but after rain it swells up and becomes very obvious & jelly-like. Quite common. Some species green, some species clear.
Alternitavly might be a type of Algae.
I did wonder about Brain Fugus, but the colour did'nt fit the discription, so it should change colour and get a little bigger?
Yep, it will get bigger & turn Yellow.