HMS Victory…..https://snr.org.uk/heritage/hms-victory/
Tank museum https://en.wikipedia.org/wiki/The_Tank_Museum with a mix of some public but mostly charity donations including.Lottery..http://www.bbc.co.uk/news/uk-england-dorset-40812423

so does this indicate a charity status might be the future? but then BBMF would need to fund workers and premises…