| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Person with significant control | B CONSTRUCTION (ESSEX) LIMITED | 🇬🇧Regno Unito | Active | 19/06/2024 – present |
| Officer | JMEC HOMES LIMITED | 🇬🇧Regno Unito | Active | 21/03/2026 – present |
| Person with significant control | JMEC HOMES LIMITED | 🇬🇧Regno Unito | Active | 18/06/2024 – present |
| Officer | LOW FOLD HOLIDAY COTTAGES LTD | 🇬🇧Regno Unito | Active | 28/01/2026 – present |
| Person with significant control | LOW FOLD HOLIDAY COTTAGES LTD | 🇬🇧Regno Unito | Active | 24/06/2024 – present |
| Person with significant control | FIREHORSE BIO FUELS GB LTD | 🇬🇧Regno Unito | Dissolved | 18/06/2024 – 30/10/2023 |
| Person with significant control | NORTHUMBERLAND ROOFING SERVICES LTD | 🇬🇧Regno Unito | Dissolved | 18/06/2024 – present |
| Person with significant control | LJM CIVIL ENGINEERING LTD | 🇬🇧Regno Unito | Active | 18/06/2024 – present |
| Person with significant control | CHARACTER SHUTTERS LIMITED | 🇬🇧Regno Unito | Active | 18/06/2024 – present |
| Officer | JOHN MASON TRADING LIMITED | 🇬🇧Regno Unito | Dissolved | 01/04/2026 – present |
| Person with significant control | JOHN MASON TRADING LIMITED | 🇬🇧Regno Unito | Dissolved | 24/06/2024 – present |
| Person with significant control | UNIFYR TECHNOLOGY LIMITED | 🇬🇧Regno Unito | Active | 10/04/2024 – present |
| Officer | UNIFYR TECHNOLOGY LIMITED | 🇬🇧Regno Unito | Active | 01/04/2026 – present |
| Person with significant control | HOLMEWOOD LOGISTICS LTD | 🇬🇧Regno Unito | Active | 19/06/2024 – 03/05/2022 |
| Officer | HOLMEWOOD LOGISTICS LTD | 🇬🇧Regno Unito | Active | 26/01/2026 – 03/05/2022 |
| Person with significant control | VAGA EUROPE LIMITED | 🇬🇧Regno Unito | Active | 19/06/2024 – present |
| Person with significant control | CUMBERLAND ROOFING SERVICES LTD | 🇬🇧Regno Unito | Dissolved | 19/06/2024 – present |
| Person with significant control | PANGEA RISK LTD | 🇬🇧Regno Unito | Active | 18/06/2024 – present |
| Person with significant control | GILDERSOME TRANSPORT LTD | 🇬🇧Regno Unito | Dissolved | 19/06/2024 – 20/11/2020 |
| Officer | GILDERSOME TRANSPORT LTD | 🇬🇧Regno Unito | Dissolved | 11/05/2026 – 20/11/2020 |
| Person with significant control | JOHN MASON LOGISTICS LTD | 🇬🇧Regno Unito | Dissolved | 26/06/2024 – present |
| Officer | JOHN MASON LOGISTICS LTD | 🇬🇧Regno Unito | Dissolved | 04/04/2026 – present |
| Person with significant control | TJJ SURFACING LIMITED | 🇬🇧Regno Unito | Dissolved | 18/06/2024 – present |
| Person with significant control | MASON SCAFFOLDING LIMITED | 🇬🇧Regno Unito | Active | 18/06/2024 – present |
| Person with significant control | CUMBERLAND ROOFING LTD | 🇬🇧Regno Unito | Active | 18/06/2024 – present |
| Person with significant control | STYCHFIELDS TRAINING LTD | 🇬🇧Regno Unito | Dissolved | 18/06/2024 – present |
| Person with significant control | CONDOR SECURITY & EVENTS LTD | 🇬🇧Regno Unito | Dissolved | 18/06/2024 – present |
| Person with significant control | MASON & CO PROPERTY CONSULTANTS LIMITED | 🇬🇧Regno Unito | Active | 18/06/2024 – present |
| Person with significant control | JON MASON LTD | 🇬🇧Regno Unito | Dissolved | 18/06/2024 – present |
| Person with significant control | PR PROSE LIMITED | 🇬🇧Regno Unito | Active | 18/06/2024 – present |
| Person with significant control | HARTLEPOOL HOA LTD | 🇬🇧Regno Unito | Proposal to strike off | 19/06/2024 – present |
| Person with significant control | ALL KEY SOLUTIONS LIMITED | 🇬🇧Regno Unito | Proposal to strike off | 18/06/2024 – present |
| Person with significant control | JOHN MASON SOLUTIONS LIMITED | 🇬🇧Regno Unito | Dissolved | 19/06/2024 – present |
| Person with significant control | MASON UTILITIES & GROUNDWORKS LTD | 🇬🇧Regno Unito | Dissolved | 19/06/2024 – present |
| Person with significant control | ARTISAN COATINGS LTD | 🇬🇧Regno Unito | Active | 19/06/2024 – present |
| Person with significant control | SYNERGY THEATRE PROJECT | 🇬🇧Regno Unito | Active | 19/06/2024 – 23/04/2018 |
| Person with significant control | MASON DRIVING SERVICES LIMITED | — | Dissolved | 19/06/2024 – present |
| Person with significant control | INUVANO LIMITED | 🇬🇧Regno Unito | Active | 19/06/2024 – present |
| Person with significant control | INGENIOUS IDEAS LIMITED | 🇬🇧Regno Unito | Active | 19/06/2024 – present |
| Person with significant control | MASON-COLE HOLDINGS LIMITED | — | Active | 19/06/2024 – present |
| Person with significant control | MASON ENVIRONMENTAL LTD | 🇬🇧Regno Unito | Dissolved | 18/06/2024 – present |
| Person with significant control | — | — | Active | 19/06/2024 – 16/01/2017 |
| Person with significant control | HOLMESIDE AMUSEMENTS LTD | 🇬🇧Regno Unito | Active | 19/06/2024 – present |
04/04/2026
England → United Kingdom
28/01/2026
United Kingdom → England
04/08/2020
appointed