I put in my Mum's postcode.
Outlying Seniors. Pensioners living in inexpensive housing in out of the way locations. Few qualifications. Low incomes.
Well, the odd word is right. Most of the people on her street are retired, but they certainly aren't living on low incomes, and the group's jobs at retirement include professor, nurse, teacher, solicitor and senior manager. It's definitely out of the way, though! No ferry shown in the transport section. Co-op, Morrisons and Lidl shown as the supermarket choices. Only one of those actually operates on the island, and the nearest one on the mainland is ASDA. Still, it's obviously a catch all category for odd postcodes dotted around rural areas of the UK that don't fit anywhere else.