This was a bbc school's prgoramme that was about an umbrella that keep getting left in a phone box and it used to speak and I believe that you were trying to return the unbrella to it's owner and it used to sing a song which I think went like this my name is Mr Capricorn yes that's my name.

Capricorn Game
TV Cream Retro British pop culture Page 48

"At the other end of the scale, Capricorn Game, a rather odd series for the very young, introduced concepts such as pairs and rudimentary counting via the odd device of a middle-aged couple being set a treasure trail series of real-world problems by the titular gnomic animated wizard and his talking goat-headed umbrella, by way of yet another cringe-inducing song – “I’m Mr Capricorn, and I’m a clever fella/I wear a coat that’s torn and I found a magic umbrella,”... "