| william grant & sons dufftown limited | £2b | £6.3b | Aug 2024 | - | Open | Director |
| william grant & sons distillers limited | £406m | £3.2b | Jun 2019 | - | Open | Director |
| william grant & sons brands limited | £940.3m | £652.8m | Jun 2019 | - | Open | Director |
| william grant & sons limited | - | £355.9m | Dec 2018 | - | Open | Director |
| william grant & sons enterprises limited | - | £315m | May 2008 | - | Open | Director |
| william grant & sons investments limited | - | £268m | May 2008 | - | Open | Director |
| william grant & sons international limited | £248.2m | £207.5m | May 2008 | - | Open | Director |
| quality spirits international limited | £39.3m | £121.8m | Jun 2019 | - | Open | Director |
| william grant & sons uk limited | £94.4m | £50m | Dec 2021 | - | Open | Director |
| drambuie liqueur company ltd. (the) | - | £45.5m | Sep 2014 | - | Open | Director |
| william grant & sons group limited | - | £18.2m | Oct 2022 | - | Open | Director |
| spiritmen limited | £9.5m | £15.4m | Sep 2023 | - | Open | Director |
| william grant & sons pension trustees ltd | - | £14.4m | Nov 2011 | - | Open | Director |
| william grant & sons canada limited | £9.3m | £3.2m | Aug 2002 | - | Open | Director |
| house of hazelwood limited | £672.1k | £797.9k | May 2008 | - | Open | Director |
| william grant & sons general partner limited | - | £736.2k | Oct 2011 | - | Open | Director |
| william grant & sons (ame) limited | - | £650.9k | Jul 2015 | - | Open | Director |
| pajs services ltd | £415.8k | £316.5k | May 2020 | - | Open | Director |
| the surrey hills distilling company ltd | £186.3k | £244.1k | Sep 2023 | - | Open | Director |
| william grant & sons distinction limited | - | £181.7k | Aug 2016 | - | Open | Director |
| drambuie limited | - | £12.9k | Sep 2014 | - | Open | Director |
| standfast dominica limited | - | £227.7 | May 2008 | - | Open | Director |
| light spirit company limited(the) | - | £5.7 | May 2008 | - | Open | Director |
| the glenfiddich distillery company limited | - | £4.6 | May 2008 | - | Open | Director |
| the balvenie distillery company limited | - | £4.6 | May 2008 | - | Open | Director |
