"DDD Fire & Security" burglar alarm, Hackney • Morphing onwards from the last few days' triangles and shields, this is a flat-bottomed wedge that lights up at night. They used to be pretty rare, hence featuring here in the "uncommon shapes" category, though I fear they are swiftly becoming popular (fear, because they're impossible to photograph well when illuminated). In purely visual terms, they look quite effective and I prefer them to the chunky faceted "jewel" shapes of the last decade or so; however when I featured one
recently, it met with a certain amount of derision from the commenters. As for
DDD Fire & Security, they're a large Coventry-based firm who were founded in 1968, but their website gives no clue to what the memorable triple D stands for – presumably not a bra size. I've come across various "3D" firms – one stood for "
Defend, Deter, Detect" – so maybe it's a variant on that, without the unhelpful connotations of coming third.
• Spotted: Hewett Street, Hackney, London, EC2, England, 2010 • Politics: In the Labour constituency of Hackney South and Shoreditch