Sorry folks but there has been yet another move of the photo archive. This time we have moved to Flickr, so if you had bookmarked the Google+ page then best replace that with https://www.flickr.com/photos/124180170@N06/, which will get you to our new photostream.
Update 15th June: In fact the Google+ page has now been deleted in order to remove any
confusion, so my apologies to anyone who has decided to follow it in the
past week!