Derby 20s Class 20s at BREL Derby Works on 28th September 1985. I had taken a large number of pictures that day and had run out of my usual film (Kodak Tri-X), so I ended up using my reserve Ilford FP4, which produced an over-contrasty negative. I had tried printing this in the darkroom at the time and gave up, modern techniques can save some older material. Sorry no id on the 20s.