What is name and creator of small early British 1960s animation cartoon TV AD parody?

What is the name and animator of this little animated cartoon from 1960s? It was more like Monty Python style. It was a sort of a TV ad of something like MAKE YOUR OWN CARTOON KIT.. They kept changing the location to where you send payment like backdoor behind gas station or pay with a wombat with 20 pounds in... show more What is the name and animator of this little animated cartoon from 1960s? It was more like Monty Python style. It was a sort of a TV ad of something like MAKE YOUR OWN CARTOON KIT.. They kept changing the location to where you send payment like backdoor behind gas station or pay with a wombat with 20 pounds in unmarked envelope. I heard in inspired Terry Gilliam...Anyone know what this cartoon is title call?
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