I found an episode list for 'Menace' (1970 BBC2, 1973 BBC1?) :
THE STRAIGHT AND NARROW 29.9.70
GOOD MORNING, YESTERDAY! 6.10.70
CRACK-UP 13.10.70
INHERITANCE 20.10.70
THE MILLICENT SISTERS, EDWARD DE BRUNO AND RUTH: WHERE ARE THEY NOW? 27.10.70
MAN WITH A MISSION 3.11.70
KILLING TIME 10.11.70
TRESPASSER 17.11.70
SOMETHING CRIES OUT 24.11.70
NINE BEAN ROWS 1.12.70
WHO’S BEEN SLEEPING IN MY BED? 8.12.70
THE ELIMINATION 15.12.70
THE INNOCENT 22.12.70
JUDAS GOAT 22.3.73
PICK UP 29.3.73
THE HAUNTING 5.4.73
THE SITTING TENANT 12.4.73
VALENTINE 19.4.73
TOM 26.4.73
DELIVER US FROM EVIL 3.5.73
COMFORTABLE WORDS 17.5.73
THE SOLARIUM 24.5.73
BOYS AND GIRLS COME OUT TO PLAY 31.5.73
Which two are believed to survive?