| | Hamair Ltd | Dunfermline |
| | Handa Fine Chemicals | Nottingham |
 | Handary Bio-Engieering B.V. | Oosterhout |
| | HANGZHOU BM CHEMICLA.LTD | Hangzhou |
| | Hangzhou Capotchem Co., ltd. | Hangzhou |
| | Hangzhou Coson Pharm &Chem Co., Ltd | Zhejiang |
| | Hangzhou FST Biotech Co.,Ltd | hangzhou/hangzhou |
| | Hangzhou Future Harvest Bio-Technology Co. Ltd. | Hangzhou |
| Hangzhou Gosun Biotechnologies Co.,Ltd. | Hangzhou |
| | Hangzhou Greensky Biological Tech.Co.,Ltd | Hangzhou |
| Hangzhou Gul Chemical Co., Ltd. | Hangzhou |
| | Hangzhou Herbal Extract Ltd | Hangzhou |
| Hangzhou Hetd Industry Co., Ltd | Hangzhou |
| | Hangzhou JDR Diamond Tools Co., Ltd. | Jiangyin |
| hangzhou kangbeier bio-technology co.,ltd | hangzhou |
| | Hangzhou Nai Ltd | Hangzhou |
| | Hangzhou New Asia International Co.,Ltd | Hangzhou |
| Hangzhou New Asia International Co., Ltd | Hangzhou |
| | Hangzhou New Asia Ltd | Hangzhou |
| | Hangzhou New Asian Co.,Ltd | Hangzhou |
| | Hangzhou Sinoda Intl. Limited | Hangzhou |
| Hard Superabrasives | shanghai |
| | Hard Superabrasives (Shanghai) Co., Ltd | shanghai |
| Hardwood Conservatory Co Ltd | Leicester |
| | Harrier Fluid Power Ltd | Ludlow |
| | Havana Technologies Ltd | Nottingham |
| HBC Engineering Solutions - Custom Assembly | Sheerness |
| HBC Engineering Solutions Ltd | Sheerness |
| | HBC Engineering Solutions Ltd | Sheerness |
| hd outdoor indoor fiberglass furniture | ankara |
| | Headman Associates Ltd | Bromley |
| HEBEI JIHENG GROUP CO.,LTD | HENGSHUI |
| | Hebei Xingyu Chemical Co.,Ltd. | Luquan |
| | Heilan International Trading Co., Ltd | Jiangyin City |
| HengRun Group Co, Ltd | Hengshui |
| | Herbal Extract Company | Hangzhou |
| | High Society Golf | Wokingham |
| | Hirst Magnetic Instruments Ltd. | Falmouth, Cornwall |
| | HJA Security | Stanmore |
| | Hobbco Tool Co (1999) Ltd | St Albans |
| | Hogan Associates Ltd | Chelsea, London |
| | Holbourne Industrial Plastics Ltd | Cannock |
| | Holly Chemical Co., Ltd. | Shanghai |
| | Holt Broadcast Services Ltd | Reading |
| | Hongkong and Shanghai Total Co., Ltd. | shanghai |
| | HongKong Tppteem Electronics Co., Ltd | ShenZhen |
| | Horion Systems Ltd | Nottingham |
| | Howden Industrial | Renfrew |
| | HR Solutions | Kettering |
| | HT ELECS TECH LTD | BEIJING |
| huangqiu iron castings | hn |
| | Huangshan Deping Chemical Co.,ltd | Huangshan |
| | Huangshan tech-power chemical co.,ltd. | SHEXIAN |
| Huangyan Huida Plasic Mould Factory | Tai Zhou |
| | Huba Control AG Branch Office UK | Witney |
| | Hubei Huanggang Yongan Pharmaceutical Co.,Ltd | Huanggang |
| | Human Resources Consultancy | Bristol |
| | Hunan Dajie Technology Co.,Ltd | Changsha |
| Hunan Nature Pharmaceutical Co.,Ltd | Yongzhou |
| Hunan the Great Wall Sausage Casing Co. Ltd. | Ningxiang |
| | hunan tianxin foods co.,ltd | changsha |
| | Hutton Systems | Brockenhurst |
| | Huzhou International Trade Co., Ltd | Huzhou |
| Hydra-Capsule Ltd | Bishops Frome |
| Hydraproducts Limited | Gloucester |
| | Hydraspa | Nottingham |
| | Hydrotechnik UK Ltd | London |
| Hymo Ltd | Northampton |
