Fri 2011-02-25 
Wrinkled crust fungus, Phlebia radiata, a rather pale and presumably older growth than those shown here and here.
[Note added 2011-12-02: I now think this is probably Radulomyces molaris.]
Photo taken in the Wilderness, Whiteknights Park, Reading University grounds, Reading, UK, on 2011-02-18.
Thu 2011-02-24 
From last spring: a capsid bug, Dryophilocoris flavoquadrimaculatus (Hemiptera: Miridae).
Photo taken in Whiteknights Park, Reading University grounds, Reading, UK, on 2010-05-17.
Wed 2011-02-23 
From last summer: a potter (or mason) wasp, probably an Ancistrocerus sp (Hymenioptera: Vespidae). According to this comment at Wild About Britain, species of Ancistrocerus can only be reliably distinguished by microscopic examination.
Photos taken in Whiteknights Park, Reading University grounds, Reading, UK, on 2010-06-20.
Tue 2011-02-22 
From last September: field woundwort, Stachys arvensis. The leaves look like this:
Photos taken in Whiteknights Park, Reading University grounds, Reading, UK, on 2010-09-12.
Mon 2011-02-21 
From last September: a scuttle fly, possibly a Peromitra sp (Diptera: Phoridae).
Photos taken in Whiteknights Park, Reading University grounds, Reading, UK, on 2010-09-30.
