It turns out that Excalibur isn't just the name of King Arthur's sword, and my favourite movie; it's also an estate of 1940s pre-fab bungalows in South London, which Lewisham Council (Boo! Hiss!) is currently planning to demolish. This short video was made by Sarah McIntyre, who has written about it on her own highly esteemed blog. It's a great introduction to a place - and a cause - that I did not know about. I particularly like the way that all the streets on the estate seem to be named after Arthurian characters... though who'd want to live on Morded Road?