The horrible Australian character is so utterly vile, he's almost ruining it, I know he's only playing a part, but surely no one can be that bad! I think I heard some modern talk as well that wouldn't have been used back then, can't remember exactly what, possibly I heard one of the girls say "I'm good" when asked how she was.
I went there in the early 80s so the way it was depicted in this series was all part of a dim and distant past, although, I do remember the expression "clean as a pommie's bath towel" being bandied about, again a throwback, I think the weekly bath had long since been consigned to the past by then
although if those who were several generation Australians, had experienced a Britain in the depths of winter without central heating their bath towels might also have been unsullied
As a drama I've found it not too bad, OTT for dramatic effect I imagine.