I’m Curious about this too actually. The closest “easy” thing would be a statutory claim I think. But you can’t make it if the debt is over 6 years old. http

I’m Curious about this too actually. The closest “easy” thing would be a statutory claim I think. But you can’t make it if the debt is over 6 years old. https://www.gov.uk/statutory-demands https://www.gov.uk/statutory-demands It appears you can sue for the return of property in civil court. https://www.askthe.police.uk/view-category/?id=2ec7e112-6ad2-eb11-bacb-000d3ad61986 https://www.askthe.police.uk/view-category/?id=2ec7e112-6ad2... I’m Sure though there’s complexity that make all of that not relevant if it’s a country suing. Usually international treaty comes into place when things are international. However, some interesting cases against the British museum. https://www.artnews.com/art-news/news/a-uk-heritage-group-will-sue-british-museum-over-access-to-long-disputed-parthenon-marbles-1234623180/ https://www.artnews.com/art-news/news/a-uk-heritage-group-wi... https://www.nytimes.com/2015/05/15/world/europe/greece-british-museum-elgin-marbles.html https://www.nytimes.com/2015/05/15/world/europe/greece-briti... There’s a whole book on this dispute from a litigator. https://www.elginism.com/elgin-marbles/why-dont-we-just-sue-the-british-museum-a-litigators-perspective-on-the-elgin-marbles-debate/20121114/6713/ https://www.elginism.com/elgin-marbles/why-dont-we-just-sue-... And the British museum policy on giving back objects. https://www.britishmuseum.org/sites/default/files/2019-10/De-accession_Policy_Nov2018.pdf https://www.britishmuseum.org/sites/default/files/2019-10/De... Finally, it looks like The government may be preventing this. They may have been acted upon in 2005? And also https://www.museumsassociation.org/museums-journal/news/2022/10/government-delays-bill-allowing-nationals-to-return-items-on-moral-grounds/ https://www.museumsassociation.org/museums-journal/news/2022... However, this may answer all your questions. https://davidallengreen.com/2021/05/the-british-museum-looted-goods-and-the-law/ https://davidallengreen.com/2021/05/the-british-museum-loote...