Bangers and Mash by Paul Groves.
These books were a staple in the early years of primary education, published by Longman in the mid-1970s, accompanied by a series of workbooks. Their popularity among both boys and girls stemmed from the playful antics of the chimpanzees featured within.
In the late 80's these books were published by Ladybird 

A Look Inside The Books

This series of books were even made in to a computer game on the ZX Spectrum and Amstrad CPC 

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