| Name | Code | Last | Cur | M. cap. | Industry |
|---|
| YouGov PLC | YOU XLON | 335.00 | GBP | 532 | Marketing & Advertising |
| Young & Co's Brewery PLC | YNGa XLON | 1,535.00 | GBP | 1,064 | Restaurants |
| Young & Co's Brewery PLC | YNGN XLON | 630.00 | GBP | 1,064 | Restaurants |
| Young & Co's Brewery PLC | YNGA XLON | 969.00 | GBP | 1,064 | Restaurants |
| Yu Group PLC | YU. XLON | 207.50 | GBP | 14 | Multiline Utilities |
| Zaim Credit Systems PLC | ZAIM XLON | 0.05 | GBP | 0 | Consumer Lending |
| Zambeef Products PLC | ZAM XLON | 3.85 | GBP | 15 | Food Retail & Distribution |
| Zanaga Iron Ore Company Ltd | ZIOC XLON | 8.90 | GBP | 100 | Iron & Steel |
| Zegona Communications PLC | ZEG XLON | 680.00 | GBP | 7,009 | Integrated Telecommunications Services |
| Zenith Energy Ltd | ZEN XLON | 13.60 | GBP | 57 | Oil and Gas Exploration & Production |
| Zenova Group PLC | ZED XLON | 0.22 | GBP | 0 | Business Support Supplies |
| Zephyr Energy PLC | ZPHR XLON | 3.75 | GBP | 89 | Oil and Gas Exploration & Production |
| Zhejiang Yongtai Technology Co Ltd | YTT XLON | 5.70 | GBP | 1,715 | Commodity Chemicals |
| Zinc Media Group PLC | ZIN XLON | 58.50 | GBP | 19 | Entertainment Production |
| Zinnwald Lithium PLC | ZNWD XLON | 5.75 | GBP | 37 | Agricultural Chemicals |
| Zoo Digital Group PLC | ZOO XLON | 9.25 | GBP | 12 | Software |
| Zotefoams PLC | ZTF XLON | 307.00 | GBP | 204 | Commodity Chemicals |
| Zytronic PLC | ZYT XLON | 44.20 | GBP | 6 | Electrical Equipment |