Gas - Testing - Medical in Sheffield, South Yorkshire
| Name & Address | Phone # | Website |
| British Glass Ltd 9 Churchill Way, Sheffield, South Yorkshire S35 2PY | 0114-290 1850 |  |
| Commercial Testing Services Ltd Blackmore Street, Sheffield, South Yorkshire S4 7TZ | 0114-276 8758 |  |
| Cutlery & Allied Trades Research Association Henry Street, Sheffield, South Yorkshire S3 7EQ | 0114-276 9736 | |
| Johnson & Allen Ltd Smithfield, Sheffield, South Yorkshire S3 7AR | 0114-273 8066 | |
| Lavender International Non Destructive Testing Ltd Unit 1 & 7/Penistone Court, Sheffield, South Yorkshire S36 6HP | 01226 765769 | |
| Metals Technology (Testing) Ltd 1 Senior Road, Sheffield, South Yorkshire S9 4PN | 0114-243 7271 | |
| NDT Ltd Maltravers Road, Sheffield, South Yorkshire S2 5AD | 0114-272 7317 | |
| Scientifics Ltd Nether Lane, Sheffield, South Yorkshire S35 9ZX | 0114-240 1901 | |
| Sheffield Assay Office 137 Portobello Street, Sheffield, South Yorkshire S1 4DS | 0114-275 5111 | |
| Sheffield Testing Laboratories Ltd Nursery Street, Sheffield, South Yorkshire S3 8GP | 0114-272 6581 | |
| South Yorkshire Laboratory Station Road, Sheffield, South Yorkshire S35 9YR | 0114-203 7014 | |
| UK Inspection Ltd UK House, Sheffield, South Yorkshire S35 9YR | 0114-246 6666 | |
| Ultra-Mag 42 Wilberforce Road, Sheffield, South Yorkshire S25 5EG | 01909 564369 | |
| Wortley Standards Ltd Forge Lane, Sheffield, South Yorkshire S35 7DN | 0114-288 2423 | |
| 1st Electrical Services 117 Smithy Moor Avenue, Sheffield, South Yorkshire S36 1FH | 0114-283 0461 | |
