After last year's experience of birds nesting in the workshop I am regularly checking for similar events.
So far this year the birds have stayed away and there is little sign of wasps making their home.
I am not too concerned about the bird nests but I am knocking down the wasp nests that I find.
Whist checking the workshop last Sunday I noticed a shiny visitor high up at the roof ridge, I managed to snap a couple of photos before he, or she, slithered away, I don't know where it went but it was pretty swift.
A close up of the body and an internet search shows that it may be a ladder snake, apparently quite common in the region. My guess is that it was at least 2 feet long so not a baby. Wikipedia tells me that they don't like to be picked up and will happily bite when threatened so I'm glad it was way up in the roof space.
I just hope that it is catching rats and mice out there because all those feral cats around the area don't seem to be doing the job.