Greene initially founded a brewing business in 1801 with John Clark in Bury St Edmunds.
[1] He was a supporter of the arts and in 1819 lent £5,000 to William Wilkins to build the Theatre Royal in Bury St Edmunds.
[1] He made three claims under the Slavery Abolition Act 1833 and was awarded a total of £4,033 15s 7d compensation for the 231 slaves he had owned on his estates in Montserrat and St Kitts.
[4][5][6] The Centre for the Study of the Legacies of British Slave-ownership at UCL describes him as an enthusiastic supporter of slavery, being particularly active between 1828 and 1833.
[7] In June 2020 Greene King announced that it would be paying reparations to BAME charities in recognition that he and by extension the company had benefited from slavery.