I've just posted a couple of captures at Michael Bilton's thread (one of them included below), which has also been neglected for the last three years, at least in terms of contributions.
They both appeared in an episode of forgotten sitcom Dear Mother ... Love Albert called The Compulsive Gambler as two of the contestants on fictional quiz show Double Another. The third was Rodney Bewes, the eponymous Albert. Damaris is introduced by jovial American host Al Mancini as "Miss Bridget McCarthy, the eminent sociologist":

"Hello"
With Michael Bilton as university lecturer Professor Desmond Sage (Rodney has just dropped his pencil!):
Original ITV Transmission: 8th February 1971 (40 years ago yesterday), when George Harrison's
My Sweet Lord was No. 1
This series of
Dear Mother ... Love Albert was affected by ITV's
Colour Strike, which ended the day this was broadcast.
Damaris Hayman has made occasional appearances during my DVD viewing and is always a pleasure to see, usually only very briefly. Her two episodes of Steptoe and Son often come to mind, as the Lady at Cinema Cash Desk in Sunday for Seven Days and one of Harold's committee members in My Old Man's a Tory.
Earlier today, I received the box set for And Mother Makes Three, with Wendy Craig, and look forward to seeing Damaris playing a 'School meals supervisor' in one show! I also have her guest contributions to The Mind of Mr. J.G. Reeder (as one of his weekly secretaries), The Sweeney, The Pink Panther Strikes Again, Robin's Nest, and Clarence, starring Ronnie Barker. I am relieved to know her appearances in The Basil Brush Show exist and may even get to see them one day.
As for Julian Orchard, my most recent viewings of him have been as The Padre in episodes of The Pathfinders. I dimly remember him as some kind of reporter or interviewer chasing Les Dawson, in one of the latter's sketch shows, and being shocked by his early death. Julian can sometimes be seen in repeat viewings of the wedding scene in Half a Sixpence (to the tune of Flash! Bang! Wallop!), as the Photographer.