Leeds Museums and Galleries have an ongoing project, 'Decolonising the curriculum':
https://museumsandgalleries.leeds.gov.uk/engagement/learning-engagement/decolonising-the-curriculum/
All that's happened is that they've been asked by City Council officials to ensure that their work embraces local products, so that schoolchildren realise that the history of slavery isn't something 'remote', that happened in other countries long ago, but also relates directly to what's a part of their everyday lives in the UK. No funding has been diverted from the council's social care budget for the project; it's simply part of what the museum's staff have already been doing.
It sounds like excellent work to me and I hope that there will be similar projects (if there aren't already) in cities like Bristol and Liverpool, that have strong historical links to the slave trade.