They have a public presence and are a household name because they will let anyone do things in their name - see Jack Monroe. They were willing to distribute a book that had untested, unworkable recipes and tips that were actually dangerous to their users until the internet backlash against the book meant they had to step in. And while part of the responsibility to update is on Jack and the publisher, the TT haven’t updated about the distribution either. There’s a fair chance some of the sales, maybe even most, were based on the online shops who were directly promoting that link, if they’ve cut the tie and won’t distribute, TT should come forward and say that.Their research focusses on their Foodbanks because that’s where they can get consistent data from. You can read about what they do with their funding in their annual report.
And as for Trussell Trust not doing that much … I mean, there’s a thread on here about them - they’re a household name - they’ve started umpteen conversations about food poverty - them and their cause are prescient in public consciousness.
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It’s also important to remember that profit making companies spend millions influencing government and policy, both publicly and behind the scenes. For Trussell trust to be generating conversations in parliament is actually quite impressive if you think about their funding compared to shady corporates.
And because they flatly refuse to acknowledge the presence of anyone else in their sector. They don’t signpost to other food banks in areas where the ones tied to them don’t operate. I can accept there might be issues with getting consistent data from small independent food banks, but what about the Salvation Army? Similarly if they said they didn’t want to link to independent banks that aren’t verified, fair enough, but again, they could link to the Salvation Army (who yes also have some problematic aspects but if someone is desperate for food, being signposted there is far better than “sorry our nearest bank is 10 miles away from you.”).