I've just done a blitz google on this book Trust, Kwartang & others co-wrote. So summary here for me (& others?)
"shock therapy" said FT, in 2012. I'd say the FT commentary is more observational than anything, but not especially supportive. This is The FT we're talking about.
Buzzfeed summary of the book: Brits are lazy (repeated theme) for which soft parents & Boomers are to blame, too much tax disincentivises people, market economy can fix all this especially if unregulated and ... govt debt is bad. Hahaha. I guess they decided to forget about that one.
2 star ratings on Amazon & Goodreads. One summary on GoodReads of the message “When we seek to protect the vulnerable we limit the freedom of the rich and the privileged – and that is a disgrace.” Amazon reviews include words like "tripe" and "drivel" a lot. Quite libertarian. Fan says it contains "hard truths." A very specific repeated criticism is that it's very selective of evidence, so an ideological rant not unbiased appraisal. I didn't realise Raab was coauthor. William Podmore's 2013 review on Amazon is especially good, "They claim that economic problems have cultural causes, and therefore cultural cures." (curing laziness)
I suppose the bottom line is, we're all getting a stiff dose of economically harsh medicine because we (you me but not the 5 authors) are "too lazy". That's the big message. Truss Kwartang et al view Brits as lazy skivers who raise our children badly.