Two Pictures from Norman Painting
I have attached two pictures which may be of interest to you; a stationary oil engine and portable oil engine made by (The Forward Engineering Co.Ltd.,) Kynoch Limited, Holford Works in 1904.
The stationary engines were made in a range from 2bhp to 35bhp costing £55 to £340 and the portables from 7bhp to 35bhp costing £165 to £430
A Picture from Chris Boers
I recently found this 2hp Kynoch-forward gas engine here in Australia,