Presumably you are having a little giraffe about Gina. Most of her claims have been debunked, though there is obviously some family money in her life.
Hard to say who is rich. Liz said that Jim told them he had owned 7 houses and lost them all through divorces. (I should think four divorces would inevitably be pretty costly). Presumably if he moved to Dubai to avoid tax, he is still in a high tax bracket though. (Which is a bit of a puzzle; he hasn't done any new work for many years, has he; and surely his royalties can't be THAT high?)
Luisa'a business status is hotly debated, but it seems certain that she has been bigging it up somewhat. Apart from anything else, owners of successful, fast-growing but very young businesses do not take 4 weeks off to do Big Brother. I suspect she would drop it like a shot if someone offered her a tv job.
Sam owns a shop doesn't she? No idea how well it is doing.