Hutchinson's Pie was published 5 times per year from 1943 until around 1950. The Pie appeared with the season as part of the name, ie Winter Pie, Autumn Pie, Spring pie, Summer Pie and Christmas Pie.

Issues published in 1944-1947 contained Original Carcroft stories by Frank Richards. Thirteen original Carcroft stories appeared in the Pie, ten of them were later reprinted in the Silver Jacket.

You can find more detail in the publications section of  The Greyfriars Index

In 1953 the Rev J.P.H. Hobson, Headmaster of a school in Surrey contacted Frank Richards to ask if he would write a short story for the school magazine. Hamilton replied saying that the publishers barred Greyfriars, St Jim's and Rookwood but he would be happy to write short Carcroft story. The story appeared in the school magazine and was later reprinted in the 1986 edition of the Collectors Digest Annual. You can read the article and story here.
The following year Rev Hobson decided to emulate Oliver Twist and ask for more. Hamilton obliged and in 1954 the school magazine published yet another Carcroft story, It was reprinted in the 1988 edition of the Collectors Digest Annual, You can read the article and story here.