Hi, I only have what I was told many years ago but remember it was something to do with his lungs/breathing, so am not sure of the actual nature of what caused the damage.  I would be glad to hear any news/details of my late uncle and his service if at all possible.  There may be others in the pictures who are of interest to their families.  

The surnames on the larger photo from rear left to right are: Key and Hawley, next row Drew, Gould, Turp, Barnes, Warner, Berry and front row left to right are: Watts, Spikins, Whitgift, Cpl Whitehead, Flt/Sgt Larbalenstier, Marsant, Thurston (which is actually my maiden family name, Berry married Eunice Thurston so not sure if the Thurston in the photo is actually a relative of mine, and Duncaston. 

The smaller photo rear left to right are: Sharpless, Brennon, Tams, Bradfield, Charrett, next row: Ward, Cure, Taylor, Beavis, Berry, Birkitt, Tucker, Turp, Copeland, Andrews, next row is Terry, Tracey, Ticehurst, Cpl Simpson, Bumstead, Thurston, Dennis and front row; Allen, Southgate, Beaumont, Caldecott, Taylor, Squires, Tilling.