| 14-2/5-020 | U5171 | THORN E M I ELECTRONICS LTD |
| 14-2/5-023 | U5171 | THORN E M I ELECTRONICS LTD |
| 50-115 | U2164 | JAMES WALKER & CO LTD |
| 70-0170 | U2164 | JAMES WALKER & CO LTD |
| 70-0170 | U8616 | JAMES WALKER & CO LTD |
| 50-115 | U8616 | JAMES WALKER & CO LTD |
| B0393 | C7580 | JA-GASTECHNOLOGY GMBH |
| B0393 | K0207 | HALE HAMILTON (VALVES) LIMITED |
| BO393 | K0207 | HALE HAMILTON (VALVES) LIMITED |
| BS1806 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1806-115 | K7766 | BRITISH STANDARDS INSTITUTION |
| 71-0220 | U2164 | JAMES WALKER & CO LTD |
| 71-0220 | U8616 | JAMES WALKER & CO LTD |
| ASC1376317 | Z4779 | ASC PTY LTD |
| BSM48-115 | K7766 | BRITISH STANDARDS INSTITUTION |
| JW50-115 | U2164 | JAMES WALKER & CO LTD |
| JW70-0170 | U2164 | JAMES WALKER & CO LTD |
| JW71-0220 | U2164 | JAMES WALKER & CO LTD |
| JW71-0220 | U8616 | JAMES WALKER & CO LTD |
| JW70-0170 | U8616 | JAMES WALKER & CO LTD |
| JW50-115 | U8616 | JAMES WALKER & CO LTD |