1.   Behind a grey stone wall lay a little pool.

2.   Opposite, the fields of the abbey stretched to its grey stone walls.

3.   Somnolent now within its low grey walls and stumpy towers, it was once rich on salt, and powerful to boot.

4.   Nothing would grow in the shadow of the grey wall.

5.   The high grey walls of the Roman fort provided a screen for these modern soldiers and their bizarre equipment.

6.   How could anyone seriously want to go back to wind and rain and the grey walls and streets of north Britain forever?

7.   The high grey wall has a lip trimmed with razor wire.

8.   Inside, an unwashed cement floor led to a living room with grey walls smeared with black fingerprints.