Plymouth & Woodford Green, Essex
Here, first of all, are two Anderson shelters that were made out of concrete, not corrugated iron.
The photo on the left is of a shelter in Stoke, Plymouth.
The enterprising owners of the shelter in Woodford Green - below on the right - have cleverly turned it into a home for frogs and newts. They discovered it - after they had bought the house - covered in ivy and half buried in soil.
You can click on the right hand image to see a larger version of this photo.
Here is an impressive corrugated iron Anderson shelter, built entirely underground and since lovingly restored by its owner, who has fitted a new ladder and hatch. Larger versions of the photos may be seen if you click on the following images.
Its owner reports that there were once several of these brick built shelters in the Finchley area of North London, and a couple still remain:
Here are two photos of a rectangular concrete shelter.
Here is another interesting one. The nearby house was built in the 1930s and an Anderson shelter appears to have been specially built within a thick concrete shell. It was subsequently used as a wine cellar - hence the thermometer.
This is a very impressive shelter refurbishment. The shelter is not set in a trench in the garden. Instead, as the garden slopes uphill, the shelter is partly set into the hill with decking above it. The shelter has been supplemented (in more recent times) with a brick archway and some retaining walls at its entrance. The escape hatch at the back of the shelter is especially clear.