The Adventures of PC 49

The Adventures of PC 49 is a 1949 British crime film directed by Godfrey Grayson and starring Hugh Latimer, John Penrose and Annette D. Simmonds. 
It is also known by the subtitle Investigating the Case of the Guardian Angel. The film was based on a popular radio series. It was followed by a sequel "A Case for PC 49" in 1951.
There were six children's annuals full of stories of PC 49, as well as an annual reprinting of his strips in the Eagle comics.