[TOMT] Old British B/W movie where a husband finds a dead man in his home and thinks his wife killed the man and try to hide it. More info...

Old British black and white movie where a husband finds a dead man in his house and thinks his wife killed the man and he tries to hide it.

His neighbor is a busybody, who keeps coming to his house while he tries to hide the body by digging a hole in his living room.

He is a piano teacher and there is this kid going in his house too for lessons.

Thanks in advance.

EDIT: Found it! The film is called Dilemma (1962) - https://www.imdb.com/title/tt0238165/