Silver-sided sector spiders (Zygiella x-notata) have made themselves at home here. Unless they're wrapping up some unfortunate victim caught in the web, they stay hidden away during the day. Consequently, the only opportunity to appreciate them is after dark, when they hang out in the middle of their webs, like this one.
The 'sector spider' part of the common name is because their orb webs typically have a couple of missing sectors. You can guess the derivation of the other part of the name.
[28 March 2014, Olympus OM-D EM-1, 60mm f/2.8 macro , ISO 200, 1/200 at f/8; diffused flash]
All content © 2014 Pete McGregor