Just that really, new series recently started. I'm sure the "Numbers" are a work of fiction especially the renovation costs and "other fees".
2nd prog in series was a massive job, complete new roof, scaffolding, remove and make good upstairs ceiling and loftspace, plus kitchen, bathrooms, flooring, full redecoration, staging with furniture, etc.
The 3rd in the series was a lot simpler, no roof replacement, no staging, smaller/simpler kitchen & bathroom, just skimming and decorating throughout, and they were getting all sorts "free" from friends and colleagues. Yet somehow the renovation cost £26k.
Same with "other" costs, i.e. legal, stamp duty, loan interest, EA fees. Despite buying and selling at similar pricing, and the presenter estimating £24k for the 3rd episode, the actual costs were £36k, despite the costs for 2nd episode being around £25k.
I think their number crunchers need a new calculator!