3 figures in property development

I am a total Sarah Beeny fan and absolutely love the Property Ladder programme on C4. It is the only "homes" style programme I'll watch because of the clash between know-it-all first time developers and the masterful and highly successful Ms Beeny. Tonight's show was a classic comparison between one couple who took her advice and made 74k and another who didn't and lost 48k. The best thing is the arrogance of the people who says things like "I like to think that despite losing my house, bankrupting myself and suffering a nervous breakdown that this development was a total success." Where do C4 find these people from - all LibDem members perhaps?