Strumpshaw Fen
Galls on Alder (Alnus gluinosa) Leaves
Possibly Waxy Buckthorn Aphids (Aphis commensalis) on Purging Buckthorn (Rhamnus cathartica)
but there are known to be fifteen species of aphids that live on Purging Buckthorn
Aphid Sp
Common Green Furrow Bee (Lasioglossum morio)
Beetle Sp?
Grammoptera ruficornis
Beetle Sp?
Choke Fungus (Epichloe typhina)
Cramp - ball Fungus Weevil (Platyrhinus resinosus)
The larva develop inside Cramp-balls.
Cranefly Sp?
Tipula fulvipennis?
Cranefly Sp?
Nephrotoma flavipalpis perhaps?
Cranefly Sp?
Nigrotipula nigra
♂︎
♀︎
Snipe Fly Sp?
Chrysopilus cristatus
♂︎
♀︎
Chrysogaster solstitialis
Note the markedly purple colouration of the thorax
Eupeodes luniger
Not quite
Gill Judd commented
I think it is E. corollae, as the yellow bands reach the margins of the abdomen.
Fly Sp?
Fly Sp?
Parastised by a fungus.
Rust & Galls on a willow (Salix Sp?)
Golden-bloomed Grey Longhorn Beetle (Aganpathis villosoviridescens)
Horsefly Sp?
Hairy-legged Horsefly (Hybomitra bimaculata)
Eristalis pertinax ♂︎
Orange-belted Plumehorn (Volucella inflata)
Eristalis intricaria
Seven Spot Ladybird Larva (Coccinella semipunctata)
Harlequin (Harmonia axyridis - succinea)
Lejogaster metallina
Common Lizard (Zootoca viviparia) A nice green variety.
Yellow-barred Longhorn (Nemphora degeerella)
Malachite Beetle (Malachius bipustulatus)
Marsh Click Beetle (Actinicerus sjaelandicus)
Melangyna compositarum
Thorax dull 
Mosquito Sp?
Moth Sp?
Nettle Weevil (Phyllobeus pomaceus)
?
This is probably a young Cranefly (Limonia Sp) that has yet to colour up.
Thanks to NNNS via Twitter.
Fly Sp? on ?
Puccinia rust on willow.
Purging Buckthorn (Rhamnus cathartica)
♂︎
Riponensia splendens
Gall Sp? on Willow
Rust Sp on Willow
Sawfly Sp?
Tenthredo mesomela
Moth Sp?
Snail Sp?
Kentish Snail (Monacha cantiana)
Snipe Fly Sp?
Rhagio tringarius
?
Spider Sp?
Spider Sp?
Aphids on Thistle
Possiby Black spindle-thistle Aphid (Aphis fabae cirsiiacanthoidis)
Mating Pair
Tooth-thighed Hoverfly (Tropidiua scita)
Guelder Rose (Viburnum opulus)
Viburnum Leaf Beetle having a jolly good go at the Viburnum.
Thanks to NNNS via Twitter
Wasp Beetle (Clytus arietis)
Woundwort Shield Bug (Eysarcoris venustissimus)
Speckled Wood (Pararge aegeria)