Season -, Episode -
Air date 25 December 1981
Episode guide
And a Dewhirst Up A Fir Tree
In the Service Of Humanity
The trio decide to look up some old school friends, to try and recapture the spirit of Christmas from the past.
  • This is the first time that the theme tune is sung, with lyrics, by a choir.
  • Included on the Series 5 & 6 boxset.

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