Wendy
Have looked in kellys for 1896, 1904 and 1908. No 75 New John St is not listed in any of them. There is a David Jennings, Provision dealer in 1896 at 237 Farm st.
There is a Henry Jennings, fruiterer and greengrocer at 56 smallbrook st in 1896, 1904 and 1908 and a Charles Jennings, greengrocer at 32 Prescott st in 1896.
There is listed a greengrocer at 75 New john St West in 1904 and 1908 , but his name is George Lewis. In 1896 the building was occupied by a miss Annie Badkins, boot and shoe maker (sounds like a dickensian name!).
Sounds as if he couldn't have been there long anyway
Mike