Any ideas

I originally posted these on the Norfolk airfields section but have no response. The first few show the air raid shelter at RAF sedgeford which is reputed to be WW1. The sloping wall above the steps has been added at a later date. I am trying to identify the other building which it has been suggested may have been a mortuary. Apologies for duplicating but any suggestions would be much appreciated.

Dimensions are approx 20 ft x 12ft. it is divided into 2 rooms, one with a standard width doorway from the outside the other with a much wider external doorway, as is the door dividing the 2 rooms. There are only vents in one of the rooms, although the vent in the roof spans both rooms. All the windows are at a high level. The roof is asbestos sheets with shingles over the top. The screed from the floor comes up the internal walls for approx 2" as hopefully this picture shows. The British brick society reckon that the blocks were in commomn use until the early 1950's but were not designed to be load bearing. The lintels look to be pre-cast. It is possible that the brickwork up to the level of the blue engineering bricks is earlier than the rest of the building. Certainly the bricks used in the piers in the 4 corners are of different dimensions to those below the damp course level and look to be LBC flettons. If this is the case, earliest possible date for them is 1936.