Sat 2011-10-01 
A largish female Muscid fly, probably a Phaonia valida = Phaonia viarum (Diptera: Muscidae).
P. valida is one of the larger species in its genus: this one seemed about 15mm long ('bluebottle size'), while most other Phaonia are between 6 and 9mm ('housefly size').
Photos taken in Whiteknights Park, Reading University grounds, Reading, UK, on 2011-09-25.
Fri 2011-09-30 
From the underside of a rotting log: wrinkled crust fungus, Phlebia radiata. Like something from another planet.
Photo taken in the Wilderness, Whiteknights Park, Reading University grounds, Reading, UK, on 2011-09-25.
Thu 2011-09-29 
A tiny fly: probably a male Hybotid fly, possibly Trichinomyia flavipes (Diptera: Hybotidae).
Photos taken in the Wilderness, Whiteknights Park, Reading University grounds, Reading, UK, on 2011-09-24.
Wed 2011-09-28 
A pair of phantom crane flies mating, probably Ptychoptera albimana (Diptera: Ptychopteridae), judging by the white tarsi on the hind legs of the female (ID suggested by Roger Thomason here). The colour of the abdomen seems to be quite variable in this species.
Photo taken in the field below Chazey Wood, near Caversham, UK, on 2011-09-19.
Tue 2011-09-27 
A tiny grey and black fly that looked like it might be laying eggs on fungus growing on rotting logs. Probably a female Polyporivora picta (Diptera: Platypezidae). Mainly yellowish legs, weak bands on the abdomen and a black scutellum (not shown well here). Identified by Menno Reemer in the comments below.
The following fly which I photographed in the same area just 4 minutes later is a female Polyporivora ornata. White scutellum, stronger bands on the abdomen and mainly black legs (not shown well here).
Photos taken in the Wilderness, Whiteknights Park, Reading University grounds, Reading, UK, on 2011-09-25.
