Upton Fen
Lacehopper Sp?
Very much like to find some more of these.
Forewings with brown marking at the base. Although not fully in focus it does have
a dark transverse band across the wings.
and
The commonest one is
Common Lacehopper (Cixius nervosus)
Grammoptera ruficornis
Sillis ruficollis
Males large comb like antennae and the sharp hind angles on the pronotum
Popar Leaf Beetle Larvae 
Shedding skin priot tp pupating?
Poplar Leaf Beetle (Chrysomela populi) Feeds on Willow and of course Poplar
from
UK Beetles
anthropodafotos.de
Bog Pimpernel (Anagallis tenella)
Very Bronze Fly Sp?
Long-legged Fly Sp?
Long-winged Conehead ♂︎ Nymph (Conocephalus fuscus)
Caddis Fly
Glyphotaellus pellucidus ♂︎
Naturespot 
Smut on Carex riparia
Farysia theumenii
Dead mosquito
Broad Centurion (Chloromya formosa)
Large Marsh Horsefly (Tabalus autumnalis)
Migrant Field Syrph (Eupeodes corollae)
Conehead Sp?
Variable Damselfly ♂︎ (Coenagrion pulchellum)
Broad-barred Flexwing (Dasysyrphus venustus)
Long-legged Fly
Rhaphium crassipes
Yellow Dung Fly (Scathophaga stercoraria)
Daggerfly Sp?
Empis livida?
Eristalinus sepulchris
False Oat grass (Arrhenatherum elatius)
Fen Orchid (liparis loeselii)
Fly Sp?
Gall on Fen Bedstraw
From the
British Plant Gall Society
Possibly Geocrypta galii
from
Plant Parasites of Europe
But they neither source specifically mentions Fen Bedstraw as a host
Gallerina Sp?
Black-horned Gem (Microchrysa polita)
Green Emerald (Lestes sponsa)
Norfolk Hawker (Aeshna isoceles)
Helophilos hybridus ♀︎?
Is this the beginning of a Cigar Gall? Or…..?
Hoverfly Sp?
Neoscia Sp
Confirmed by Facebook Hoverfly group
Neoscia Sp?
Roger Morris from the Facebook Hoverlfy page
"Fairly sure that's Neoascia tenur"
The rather strange looking fly that causes the Cigar Galls in reeds.
Lipara lucens
Longhorn Beetle (Rutpela maculata)
Marsh Thistle (Cirsium palustre)
Marsh Violet / Bog Pansy) Viola palustris)
Moth Sp?
Moth case?
Spider Sp perhaps has brought the spikelets together
?
Phantom Cranefly (Ptichoptera albimama)
Picture Wing Fly Sp?
Mottled Thistle Fly (Xyphosia miliaria)
White Ragged Robin (Lychnis flos-cuculi)
Rove beetle Sp? & Spider Sp?
Rush Sp?
Wood Rush Sp?
Rush Sp?
?
Cephus nigrinus?
Sedge Sp?
Common Yellow Sedge (Carex demissa)?
Black-tailed Skimmer ♂︎ ( Orthetrum cancellatum)
Snail Killer Fly?
Pherbina coryleti
Chyrsopilus cristatus ♂︎
Soldier Fly Sp?
No soldier flies have the muscular hind legs or the head quite so obviously spherical on a stalk.
Also the angle of the photo doesn't show the humpback nature of the fly.
Dance Fly Sp? Hybotiae Sp?
Hybos culiciformis
Spider Sp?
Tooth-thighed Hoverfly (Tropidia scitta)
Lesser Water Parsnip (Berula erecta)
Sawfly Sp?
Tenthredopsis nassata
from
NatureSpot
Hanworth
Cornus Sp
Cranefly Sp?
Fly Sp?
Mydea Sp?
Likely to be
Orange-saddled Bristle-node ♂︎(Mydaea corni)
Ornage wing bases, orange scutellum, mostly orange legs. Male because the eyes are only narrowly separated.
There are two other species which are similar.
Stephen Falk Mydea corni
Yelllow Dung Fly (Scathophaga stercoraria)
Yellow Rattle (Rjinanathus minor)
White Climbing Rose
Last wing & testament.
Crane Fly Sp
Thanks to NNS via Twitter
Thompson Common
Dogwood (Cornus sanguinea) coming into flower.
Cranefly Sp?
Nephortoma appendiculata ?
Great Brome (Bromus diandrus)
Clues to id between this and B sterilis - Larger size -the plant as a whole and the spikelets, hairier panicle stem and second spikelet from the top of the plant is on a very short pedicel, which can be seen in the image above.
Elegant Bristle-moss (Orhtotrichum pulchellum)
The orange peristome teeth at this time of year give the id to this delicate little moss.
Although the capsules may look similar in shape & size to a Ulotta sp, it's the orange teeth that are the give away
Even Scalewort (Radula complanata)
Both of these mosses were found on the trunk of an Alder Buckthorn (Frnagula alnus)
They were complemented by the presence of Forked Veilwort (Matzgeria furcata) & Bluish Veilwort (Metzgeria violacea)
New Silver Birch (Betual pendula) growth on a mature trunk.
A very nice patch of Hart's Tongue Fern (Aspelenum scolopendrum) in gorgeous spring green.
New growth of Tufted Hair Grass (Deschamsia caespitosa)
Water Violets (Hottonia palustris) in the foreground.
Swathes of golden Marsh Yellow-cress (Rorippa palustris) in the pingo.
Common Spike-rush (Eleocharis palustris)
Marsh Yellow-cress (Rorippa palustris)
Common Smoothcap (Atrichum undulatum)
False Fox Sedge (Carx otrubae) or hybrid?
Purple Moor-grass (Mollinia cerulea) 
Hoverfly Sp
Common Copperback (Ferdinandea cuprea)
Yellow Dung Fly (Scathophaga stercoraria)
Yellow-barred Longhorn Moth (Nemophora degeerella)
?
Banded Mosquito (Culiseta annulata)
Cyperus Sedge (Carex pseudocyperus)
Marsh Yellow-cress and True Bullrush (Schoenoplectus lacustris)stems
Marsh Yellow-cress, True Bullrush & Reed mace (Typha latifolia)
The very beautiful Carnation Sedge (Carex panacea)
Downy Oat Grass (Avenula pubescens) or Meadow Oat grass (Avenula pratensis)
Either way a rather lovely distinctive grass 
A subtly purple tinged grass with tiny leaves, boat (Kyak) like leaf tips and a strong, rigid stem.
Spreading Meadow Grass (Poa humilis)
Down in the grass a pair of mating picture wing flies.
Rivellia syngenesiae ?
Young Tubular Water Dropwort (Oenanthe fistulosa)
This was the strange one today.
Quite remarkable Fringed Heartwort (Ricciocarpos natans)
A Heart shaped thallus with a fringe of violet spreading scales with a finely toothed margin
protruding from beneath the lobes.
LLanymynech Rocks - North Wales
Cuckoo Flower (Cardamine pratensis)
Plus friend
Micropterix calthella
Wild Strawberry (Fragaria vesca)
Herb Robert (Geranium robertianum)
Mating 14 Spot Ladybird (Propylea quattuordecimpunctata)
Black Bryony (Dioscorea communis)
Heart shaped leaves, no tendrils.
Salad Burnet (Sanguisorbia minor)
Crosswort (Cruciata laevipes)
Dog's Mercury (Mercurialis perennis)
Dogwood (Cornus sanguinea)
Yellow Dung Fly (Scathophaga stercoraria)
Hawthron (Crataegus monogyna)
Common Milkwort (Polygala vulgaris)
Flat Neckera (Neckera complanata)
Common Rock Rose (Helianthemum nummularium)
Sanicle (Sanicula europea)
Early Purple Orchid (Orchis mascula)
Fissidens Sp?
Green Shield Bug (Palomena prasina)
Hairy Shield Bug (Dolycoris baccarum)
Hazel Rust of some kind?
Bird's - foot Trefoil (Lotus corniculatus)
Medic Sp?
Black Medic (Medicago lupulina)
Striped Woodlouse (Philiscia muscorum)
Cowslip (Primula veris)
Spider Sp
Spider Sp
Spider Sp?
Nursery Web Spider (Pisaura mirabilis)?
?
Weevil Sp?
This turned out to be quite complicated.
There are a fair number of small green weevil species and they fall into two familes apparently.
Phyllobius & Polydrusus Weevils.
They both feed on the foliage of various plants. In this casing mating on Dogwood.
The families can be separated by the insertion point of the antennae. In all Phyllobius species the insertion point is visible from above. In Polydrusus species this is not the case.
Another caveat is that not all Polydrusus species are green.
An introduction to this identification conundrum can be found on
Phyllobius Weevils at Eakring Birds
In this case the antennae insertion points appear to visible form above so a Phyllobius Sp
Needless to say there is another family in the melting pot - Pachyrhinus, which looks similar to both Phyllobius & Polydrusus species.
White Bedstraw (Gallium album)
Yellow Meadow Ant (Lasius flavus)