I thought this blog post was interesting, discussing the film from the point of view of someone who knew them from their stay in the village. I think the post's from 12 June, before the story broke.
"When they arrived, penniless, halfway through their quest to complete the 630 mile South West Coast Path, they were just another couple down on their luck.
During their sojourn, we got to know them, and I was rather surprised to hear a woman being interviewed on the BBC Radio 4 one morning, whose voice I recognised and whose story seemed familiar.
She was introduced as Raynor Wynn, but that was not the name she bore when she arrived in our village. When we met them, they were Sally And Timothy. However, later on we called her Rain and Wind."
https://tombarriesimmons.com/blog/we-see-um-come-we-see-um-go