JJ Quenby (Imperial Coll., London), TJ Sumner (Imperial Coll., London), A Bewick (Imperial Coll., London), JP Li (Imperial Coll., London), D Shaul (Imperial Coll., London), N J T Smith (Imperial Coll., London), WG Jones (Imperial Coll., London), GJ Davies (Imperial Coll., London), T Ali (Imperial Coll., London), CH Lally (Imperial Coll., London), MK Joshi (Imperial Coll., London), PF Smith (Rutherford), GJ Homer (Rutherford), GTJ Arnison (Rutherford), J D Lewin (Rutherford), G J Alner (Rutherford), MJJ van den Putte (Rutherford), NJC Spooner (Sheffield U.), JC Barton (Birkbeck College, University of London), PR Blake (Nottingham U.)