Just discovered another cover for the rather desperate 'Assistants of Doctor Who' that Target tried out in the mid-seventies.
It seems that with a lack of proper novelisations to publish coupled with the fact that adults adored Doctor Who as well (according to Matthew in the Daily Mirror), they thought that it would be a good idea to publish a series of novels that were "too broad and too unfilmable" for television.
This being the mid-seventies the adult themes in the novels turned out to be more Timothy Lea's Confessions series than Arthur C. Clarke's Space Odyssey...
There might be some more but it means getting the steps and a trip into the attic.
Heigh ho.....!