| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Person with significant control | KAKADU CAPITAL LIMITED | 🇬🇧United Kingdom | Dissolved | 18/06/2024 – present |
| Person with significant control | HEART OF PORTSMOUTH BOXING ACADEMY CIC | 🇬🇧United Kingdom | Active | 19/06/2024 – present |
| Person with significant control | DCJ WATER MANAGEMENT LTD | 🇬🇧United Kingdom | Proposal to strike off | 19/06/2024 – present |
| Person with significant control | WOODSTYLE FURNITURE LTD | 🇬🇧United Kingdom | Proposal to strike off | 18/06/2024 – present |
| Person with significant control | SEBASTIAN & CO LTD | 🇬🇧United Kingdom | Active | 19/06/2024 – present |
| Person with significant control | JOHNSTON MILLAR GROUP LTD | 🇬🇧United Kingdom | Proposal to strike off | 18/06/2024 – present |
| Person with significant control | QUICKFIT CONSTRUCTION LIMITED | 🇬🇧United Kingdom | Dissolved | 18/06/2024 – present |
| Person with significant control | DAVID JOHNSTON AGENCIES LTD | 🇬🇧United Kingdom | Dissolved | 18/06/2024 – present |
| Person with significant control | JOHNSTONE SUPPLIES LIMITED | 🇬🇧United Kingdom | Dissolved | 19/06/2024 – present |
| Person with significant control | ASCLEPIOS LIMITED | 🇬🇧United Kingdom | Active | 19/06/2024 – present |
| Person with significant control | DAVID JOHNSTON CONSTRUCTION LIMITED | 🇬🇧United Kingdom | Dissolved | 19/06/2024 – present |
| Person with significant control | PLATE774 LTD | 🇬🇧United Kingdom | Active | 19/06/2024 – present |
| Person with significant control | BALURE DEVELOPMENTS LTD | 🇬🇧United Kingdom | Active | 19/06/2024 – present |
| Person with significant control | BORIS LOGISTICS LIMITED | 🇬🇧United Kingdom | Dissolved | 19/06/2024 – present |
| Person with significant control | JW ELECTRICAL GROUP LTD | 🇬🇧United Kingdom | Active | 19/06/2024 – present |
| Person with significant control | DHK LOGISTICS LIMITED | 🇬🇧United Kingdom | Active | 18/06/2024 – present |
| Person with significant control | EEL PIE ISLAND BOAT BUILDING SCHOOL CIC | 🇬🇧United Kingdom | Dissolved | 19/06/2024 – present |
| Person with significant control | BANGOR RETAIL LTD | 🇬🇧United Kingdom | Active | 18/06/2024 – 20/12/2020 |
| Person with significant control | PACK MIDLANDS ART LTD | 🇬🇧United Kingdom | Dissolved | 18/06/2024 – present |
| Person with significant control | MOR CONTRACTS LTD | 🇬🇧United Kingdom | Active | 19/06/2024 – present |
| Person with significant control | THE DELUGE GROUP LTD | 🇬🇧United Kingdom | Active | 18/06/2024 – present |
| Person with significant control | DT WHOLESALE LIMITED | 🇬🇧United Kingdom | Active | 19/06/2024 – 25/04/2020 |
| Person with significant control | SELECT STORES GROUP LIMITED | 🇬🇧United Kingdom | Active | 19/06/2024 – 02/02/2020 |
| Person with significant control | MYWORKSPOT READING LTD | 🇬🇧United Kingdom | Dissolved | 18/06/2024 – present |
| Person with significant control | COMMANDER SOLUTIONS LTD | 🇬🇧United Kingdom | Active | 19/06/2024 – present |
| Person with significant control | JOHNSTON PIPE SOLUTIONS LIMITED | 🇬🇧United Kingdom | Active | 19/06/2024 – present |
| Person with significant control | — | — | Active | 18/06/2024 – present |
| Person with significant control | DKASS COMMS LTD | 🇬🇧United Kingdom | Active | 19/06/2024 – present |
| Person with significant control | SID TRANSPORT LTD | 🇬🇧United Kingdom | Active | 18/06/2024 – present |
| Person with significant control | COMMUNITY AND VOLUNTARY ACTION BLYTH VALLEY | 🇬🇧United Kingdom | Active | 19/06/2024 – present |
| Person with significant control | MATRIX PROJECTS LIMITED | 🇬🇧United Kingdom | Proposal to strike off | 19/06/2024 – present |
| Person with significant control | — | — | Active | 19/06/2024 – present |
| Person with significant control | MYWORKSPOT LIMITED | 🇬🇧United Kingdom | Active | 19/06/2024 – present |
| Person with significant control | TOPOFMIND LIMITED | 🇬🇧United Kingdom | Liquidation | 19/06/2024 – present |
| Person with significant control | — | — | Active | 18/06/2024 – present |
| Person with significant control | — | — | Active | 19/06/2024 – present |
| Person with significant control | — | — | Active | 19/06/2024 – present |
| Person with significant control | — | — | Active | 18/06/2024 – present |
| Person with significant control | JOHNSTON ENGINEERING GROUP LIMITED | 🇬🇧United Kingdom | Active | 18/06/2024 – present |
| Person with significant control | — | — | Active | 18/06/2024 – present |
| Person with significant control | MAGS AIR LTD | 🇬🇧United Kingdom | Active | 18/06/2024 – present |
| Person with significant control | — | — | Active | 18/06/2024 – present |
| Person with significant control | PROMOTING AUTONOMY AND CHANGE LTD | 🇬🇧United Kingdom | Active | 19/06/2024 – 18/04/2018 |
| Person with significant control | PULHAM SERVICES LIMITED | 🇬🇧United Kingdom | Active | 18/06/2024 – present |
| Person with significant control | RENX LIMITED | 🇬🇧United Kingdom | Active | 19/06/2024 – present |
| Person with significant control | CPB CONSULTANCY LIMITED | 🇬🇧United Kingdom | Active | 18/06/2024 – present |
| Person with significant control | SHANKILL UNITED FOOTBALL CLUB LTD | 🇬🇧United Kingdom | Active | 19/06/2024 – present |
| Person with significant control | DAVID JOHNSTON AGENCIES LIMITED | 🇬🇧United Kingdom | Proposal to strike off | 18/06/2024 – present |
| Person with significant control | DP CONTRACTORS LIMITED | 🇬🇧United Kingdom | Active | 18/06/2024 – present |
08/12/2025
United Kingdom → Northern Ireland
29/09/2025
Northern Ireland → United Kingdom
23/09/2016
appointed