The Scientific Reform Society was a secret fringe group which advocated that society be ruled by a scientific elite.
Headed by Hilda Winters, its public face was Think Tank, a legitimate scientific institute. The SRS used the K1 robot to steal the destructor codes for the nuclear missiles of America, China and Russia, planning to blackmail the world's governments unless their terms were met.
When the robot went mad, UNIT ambushed their meeting and most of them were arrested, though some of them, including Miss Winters, escaped. (DW: Robot)