Of course Roger and Julia would have made an excellent pairing. In fact, the perfect thing would have been a lover's triangle including Prof. Stokes.
They were the 3 wittiest characters on the whole show. Scenes between the three of them might have read like Noel Coward!!
Frankly, I always thought Barnabas came across as dimwitted and effete next to either of those gentlemen.
(Hmmmm, am I going to be verbally caned for voicing that opinion?)
Rainey