| de burgo pharma limited | £171.1m | £320.2m | Aug 2016 | - | Open | Director |
| animal care centre (loughrea) limited | £3.8m | £92m | Aug 1981 | - | Open | Director |
| chanelle pharmaceuticals manufacturing limited | £90.8m | £89m | Jun 1984 | - | Open | Director |
| chanelle veterinary limited | £71m | £54.8m | Jun 1973 | - | Open | Director |
| chanelle medical unlimited company | £51.5m | £51.1m | May 1983 | - | Open | Director |
| chanelle pet limited | £17.1m | £13.7m | Sep 2008 | - | Open | Director |
| realoch pharma limited | £8.2m | £7.2m | Mar 2016 | - | Open | Director |
| forgeglen limited | - | £2.2m | Oct 2017 | - | Open | Director |
| chanelle overseas limited | - | £988.1k | Apr 2009 | - | Open | Director |
| de burgo pharma holdings limited | - | £895.9k | Sep 1985 | - | Open | Director |
| de burgo pharma group limited | - | £840.4k | Dec 1989 | - | Open | Director |
| de burgo chemicals limited | - | £340.5k | Apr 1985 | - | Open | Director |
| michael h. burke foundation | £339.2k | £220.6k | Oct 2019 | - | Open | Director |
| willowgrove investments limited | - | £219.5k | Jul 1999 | - | Open | Director |
| ivor management company company limited by guarantee | £59.5k | £132.9k | Sep 2011 | - | Open | Director |
| p.b.s. (sales) unlimited company | - | £84.5k | Jul 2009 | - | Open | Director |
| simcasman limited | £23.2k | £71.4k | Jan 2011 | - | Open | Director |
| arnolds veterinary limited | - | £56.7k | Oct 1986 | - | Open | Director |
| learhill pharma unlimited company | - | £2.5k | Mar 2016 | - | Open | Director |
| cm de burgo loughrea limited | - | £1.6k | Jun 1998 | - | Open | Director |
| de burgo generics limited | - | £217.8 | Aug 2005 | - | Open | Director |
| de burgo healthcare limited | - | £6.8 | Aug 1996 | - | Open | Director |
| de burgo animal health limited | - | £4.8 | Dec 1999 | - | Open | Director |
| fernridge international limited | - | - | Mar 1999 | - | Open | Director |
| c & c generics limited | - | - | Oct 1998 | - | Open | Director |
