(No - happily it's not the back of our house!!)
I came across this evidence of dereliction on my bliphunt walk this morning. It's actually round the back of a building which I've blipped for Derelict Sunday before - I'm not sure how I've not previously spotted it but today I approached the building from a different direction from the usual, so that's probably why I saw it this time rather than before.
I'm assuming that this part of the building is no longer in use...!
Many thanks to Marlieske for hosting DS.