These walls were a testing ground where Aalto experimented with different textures, materials and designs, playing with brick, stone and ceramic swatches and setting them against various finishes and ornamental plants.

BBC: An Alvar Aalto tour of Finland

The CCRC said it looked at more than 50 individual points raised by Stone's lawyers in application and carried out a "substantial amount" of fresh forensic testing on material from the crime scene.

BBC: Michael Stone