Lynne is in the shower. She thinks to herself that Kitty's husband is a real cheapskate. It turns out that he refused to fit a shower when a cheaper alternative was available but Kitty wasn't impressed with having to use a garden hose.
Lynne's shower is once again filthy. She may take George to task for not helping out in the garden but that may just have been his retribution for Lynne never cleaning the bathroom.
What Lynne should really be worried about is the peeping tom who is taking photographs of her at strange angles. Lynne can obviously see him as she is attempting to cover her modesty. The fact that she knows it's happening means it must be George. He is collecting evidence of the state of the shower for a presentation he is putting together for Lynne to justify his actions in the garden.
Kitty's husband's justification of fitting a shower cubicle, a tap but not a shower head is odd. If that's all that's missing then surely Kitty could just pop down to the DIY store and buy a shower head. They are very easy to install and not at all expensive. She may have to hold it when washing herself until she gets a man in to install the shower head holder, but it's not that much of a hindrance.