| Abbreviation | Definition |
|---|---|
| WBN | Woburn Energy (de-listed) |
| WCW | Walker Crips |
| WEB | Webis |
| WEIR | Weir Group |
| WEIR | Weir Grp. |
| WEST | West. & Orient. |
| WET | Watermark Glb. |
| WFC | Watford Leisure |
| WFCA | Wfca |
| WG. | John Wood Group P.L.C. Ordinary shares |
| WG. | Wood Grp(j) |
| WGB | Walker Greenbnk |
| WHI | W.h.ireland |
| WHL | Westhouse |
| WICH | Wichford |
| WII | Welsh Ind.it |
| WIL | Wilmington Group |
| WIL | Wilmington Grp. |
| WIN | Wincanton |
| WIND | Renewable Eng. |