| william grant & sons dufftown limited | £2b | £6.3b | Aug 2024 | - | Open | Director |
| william grant & sons brands limited | £1.2b | £2.7b | Jun 2019 | - | Open | Director |
| william grant & sons distillers limited | £560.9m | £1.9b | Jun 2019 | - | Open | Director |
| william grant & sons commercial limited | £353.4m | £1.2b | Feb 2021 | - | Open | Director |
| william grant & sons limited | - | £580.5m | Dec 2018 | - | Open | Director |
| william grant & sons enterprises limited | - | £315m | May 2008 | - | Open | Director |
| william grant & sons international limited | £247.3m | £205.1m | May 2008 | - | Open | Director |
| william grant & sons investments limited | - | £180.5m | May 2008 | - | Open | Director |
| quality spirits international limited | £45.5m | £124.2m | Jun 2019 | - | Open | Director |
| william grant & sons uk limited | £102m | £50m | Dec 2021 | - | Open | Director |
| drambuie liqueur company ltd. (the) | - | £45.5m | Sep 2014 | - | Open | Director |
| william grant & sons group limited | - | £17.3m | Oct 2022 | - | Open | Director |
| spiritmen limited | £10.2m | £16.7m | 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 | £1.9m | £963.6k | 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 |
| the surrey hills distilling company ltd | £206.2k | £270.2k | Sep 2023 | - | Open | Director |
| william grant & sons distinction limited | - | £181.7k | Aug 2016 | - | Open | Director |
| pajs services ltd | - | £69.2k | May 2020 | - | 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 |
