Misc photo seeking info on who, when & where?

Writing on the back of the photo says;

SDC OCCA Printing Symposium

(From left to right)

Dr R C Denney (Head Chemistry Department, Thames Polytechnic)

Dr F Jones (University of Leeds)

Mr J Tooke-Kirby (Chairman, London Section OCCA)

Mr H Lavell (Servicol Group Ltd)

Mr J Ferguson (Hoechst UK Ltd)

Mr I Gailey (President, SDC)

Dr M Tordoff (General Secretary, SDC)

Dr T L Dawson (ICI Ltd, Organics Division)

Mr M Roberts (Chairman, London Region, SDC)

(Photo by courtesy of ‘Polymers Paint & Column Journal)