Arthur and Kath Brownlow in 1982. This is how we remember them!
Thanks to Solly who writes:
Regarding your query about the characters of Arthur and Kath Brownlow: they were originally played by Hilary Martin and Brian Haines very briefly in 1976, when Glenda was attacked by a lorry driver. They were just in a few episodes. Towards the end of 1979, they were recast with Peter Hill and Pamela Vezey taking the roles into the 1980s as permanent characters.
Thank you so much! Mystery solved!