He is best known for his "Bobby Brewster" children's books. Often the stories would have common household items suddenly coming to life and chatting to young Bobby Brewster.
He was a storyteller as well as author, usually telling his own stories. He visited many schools to give storytelling sessions; see the reference below for peoples' memories of his school sessions. He also visited many teacher training colleges to give sessions about storytelling.
In 1969 and 1970, he appeared on BBC's long running children's television show Jackanory reading several Bobby Brewster stories. Unlike other episodes of Jackanory these were recorded in front of an audience of schoolchildren.
The Bobby Brewster stories were also offered as a dial-and-listen 'bedtime story' service by British Telecom in the 1980s, where children could dial a three-digit BT number and listen to a looped voice recording of a selected Bobby Brewster story every evening.
H E Todd met Val Biro, author and illustrator of the Gumdrop books, at a storytelling session. They collaborated on several picture books, with stories by H E Todd and illustrated by Val Biro. Most of the stories had originally appeared in one of the books listed above.