Here's her DEAD grandfather's obituary:
https://www.echo-news.co.uk/news/10080874.john_savva_hadjicostas/?ref=arc
Confirming he did indeed own a restaurant and a chain of guesthouses. Soooo working class. You can't even forgive her for thinking her parents had done well for themselves, so still identifies as working class. She's at least third generation middle class!
In the following link, she says she worked in her uncle's fish and chip shop, and her other uncle's Wimpy bar, but then says she eventually learnt they are not blood relatives but in the Greek community, good friends become like aunts and uncles and she got work from it. She claims she was paying her parent's rent from this work. Never mind that her parents have owned their 5 bed for so long that it has no "last sale" information on Zoopla.
https://www.metro.news/my-money-food-writer-jack-monroe/957090/
She also insinuates that her grandfather exploited her:
"When I was 13, I used to help my grandfather in his guest house on the seafront in Southend-on-Sea. I would work the whole weekend and get paid a tenner, but I was young and didn’t have any bills, so it seemed a good deal."