Here is the version from my Dad who grew up in Leeds, England.

Sambo had an uncle, an uncle very rich.
One day he said to Sambo, "Here is two and six."
Sambo feeling thirsty, went into a shop.
Six lemonades and a ginger beer and Sambo went off pop.

(Chorus)
Ooooooh Crash bang ball
Another little job for the tombstone maker
Down at the local cemetary
On his tombstone, you will see
Sambo, the brave man free.

Sambo had an auntie, an auntie very poor.
One day she said to Sambo, "Go and wash the floor."
Sambo feeling tired, went upstairs to bed.
Came flying down the banister and landed on his head.

(Chorus)

Sambo joined the railway in a green and yellow cap.
Saw the engine coming and tried to push it back.

(Chorus)

That is all I've got.