What's the point of public inquiries?

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This week, MPs voted against a new national inquiry into grooming gangs. The vote followed weeks of pressure on Labour after Elon Musk brought grooming gangs back into the spotlight, after safeguarding minister Jess Phillips rejected a new national inquiry.
If we did have a national inquiry, what would it achieve? We’ve had many in recent years; Iraq, Grenfell Covid, the Post Office. Do they achieve meaningful justice for victims, or are they a drawn-out way to avoid knotty legislative change? Does parliament have the mechanisms to enact the recommendations – have politicians ever done this in the past, and is there an appetite to do so in the future?
Deputy broadcast editor Natasha Feroze discusses with Spectator assistant editor Isabel Hardman, and Raja Miah, anti-grooming gang campaigner and Oldham commentator.