| UK ROSVOK VALVE CO., LTD | 17438831 | Cambridge | 4 September 2026 | Active |
| DOLCC INDUSTRIAL LTD | 17398305 | Manchester | 13 August 2026 | Active |
| IRONFLOW HYDRAULICS LTD | 17317478 | Brierley Hill | 3 July 2026 | Active |
| SPECTRE TECHNICAL LTD | 17299011 | Unsworth | 24 June 2026 | Active |
| SPITFIRE HYDRAULICS LIMITED | 17283800 | Sawbridgeworth | 18 June 2026 | Active |
| SH HYDRAULIC HOLDINGS LIMITED | 17172209 | Wakefield | 21 April 2026 | Active |
| WILSON TECH LTD | 16966661 | Camberley | 15 January 2026 | Active |
| PEAK SEALING SOLUTIONS LTD | 16912497 | London | 15 December 2025 | Active |
| DEHANDS LTD | 16893001 | West Midlands, England | 5 December 2025 | Active |
| HD FLUID POWER LTD | 16733607 | Lincoln | 22 September 2025 | Active |
| PNEUMATICA (UK) LIMITED | 16673932 | London | 27 August 2025 | Active |
| BIBETTER LTD | 16592893 | Herefordshire | 18 July 2025 | Active |
| HYDRANEXUS LIMITED | SC851219 | Bishopton | 5 June 2025 | Active |
| UK STIRFLEX TECHNOLOGIES LIMITED | 16317824 | West Midlands, England | 14 March 2025 | Active |
| ORSAN AUTOMOTIVE LTD | 16201819 | Bolton | 22 January 2025 | Active |
| NEMEAN LTD | 16181885 | Coalville | 14 January 2025 | Active |
| BRIMMOND MIDDLE EAST LIMITED | SC834071 | Inverurie | 14 January 2025 | Active |
| FERSCHL LTD | 16155329 | Washington | 30 December 2024 | Active |
| ACTASK FLUID CONTROL LIMITED | 16046719 | West Midlands, England | 29 October 2024 | Active |
| WARWICK PUMP & ENGINEERING COMPANY LTD | SC825742 | Wishaw | 14 October 2024 | Active |
| SMTPOWERPLANT LTD | 15886271 | Kington | 8 August 2024 | Active |
| SILURIAN HYDRAULICS LTD | 15879959 | Cardiff | 6 August 2024 | Active |
| CORNWALL HOSE AND HYDRAULICS LTD | 15699493 | Newquay | 1 May 2024 | Active |
| PRO-HOSE LTD | 15610351 | Knottingley | 2 April 2024 | Active |
| YICHEN ENVIRONMENT TECH CO., LTD. | 15353762 | Beckenham | 15 December 2023 | Active |
| H GRAIL LIMITED | 15232721 | London | 24 October 2023 | Active |
| H GRAIL HOLDINGS LIMITED | 15232709 | London | 24 October 2023 | Active |
| CFP FLUID POWER LIMITED | 15165960 | Bristol | 26 September 2023 | Active |
| YIHENG DEXUAN CO., LIMITED | 14892771 | Cambridge | 24 May 2023 | Active |
| UK KSTFOX VALVES SELF-CONTROL LIMITED | 14887320 | West Midlands | 23 May 2023 | Active - Proposal to Strike off |
| FILTERFINDER LIMITED | 14809254 | Nottingham | 17 April 2023 | Active |
| SAVERY HYDRAULICS LIMITED | 14766636 | Coventry | 29 March 2023 | Active |
| PCK KHUNG HYDRAULIC TECHNOLOGY LTD | 14707743 | Beckenham | 6 March 2023 | Active |
| HYDRA SOURCE LTD | 14687779 | Leeds | 24 February 2023 | Active |
| KELUPP INDUSTRIAL INVESTMENT LIMITED | 14318027 | West Midlands, England | 25 August 2022 | Active |
| GEMI TRANSMISSION CO., LTD | 14197782 | Beckenham | 27 June 2022 | Active |
| SYCHEM GROUP HOLDINGS LIMITED | 14121104 | Southampton | 20 May 2022 | Active |
| B FLUID GROUP LIMITED | 14087462 | Southampton | 5 May 2022 | Active |
| UK FIELD TRANSMISSION LIMITED | 14038780 | Manchester | 11 April 2022 | Active - Proposal to Strike off |
| VALVENOK LIMITED | 14001810 | Bicester | 25 March 2022 | Active |
| UK COLES TRANSMISSION CO., LTD | 13847945 | Croydon | 13 January 2022 | Active |
| E.D.S INT EXPORT LTD | 13790343 | Beckenham | 8 December 2021 | Active |
| THE FISH FRIENDLY HYDROPOWER COMPANY LIMITED | 13705673 | Manchester | 26 October 2021 | Active |
| HYDRA HOSE GLASGOW LTD. | SC705467 | Glasgow | 1 August 2021 | Active - Proposal to Strike off |
| HYSERVE MARINE LIMITED | 13488174 | Blyth | 1 July 2021 | Active |
| SCHÖN DESIGN TECHNOLOGIES LTD | 13357661 | Hockley | 26 April 2021 | Not in the latest register snapshot (dissolved or removed) |
| HYFOGICS LIMITED | 13336885 | Manchester | 15 April 2021 | Not in the latest register snapshot (dissolved or removed) |
| HSL CYLINDERS LIMITED | 12885241 | Huddersfield | 17 September 2020 | Active |
| K.G.MATZEN LTD | 12883104 | Cambridge | 16 September 2020 | Active |
| HYSERVE LIMITED | 12596465 | Birtley | 12 May 2020 | Active |