| SEE | SEEING MACHINES LD ORD NPV | GBX | 431.94 | 11.00 | -0.35 | -3.08% |  | Equity | Track |
| SENS | SENSYNE HEALTH PLC ORD 10P | GBX | 256.13 | 158.50 | -2.50 | -1.55% | | Equity | Track |
| SRB | SERABI GOLD PLC ORD 10P | GBX | 52.64 | 70.00 | 0.50 | 0.72% | | Equity | Track |
| SQZ | SERICA ENERGY PLC ORD USD0.10 | GBX | 320.52 | 120.80 | 1.20 | 1.00% | | Equity | Track |
| SENX | SERINUS ENERGY PLC ORD NPV | GBX | 34.89 | 3.20 | 0.20 | 6.67% |  | Equity | Track |
| SHG | SHANTA GOLD LD ORD 0.01P | GBX | 143.05 | 13.50 | -0.15 | -1.10% | | Equity | Track |
| SWG | SHEARWATER GROUP PLC ORD 10P | GBX | 32.50 | 133.00 | -3.50 | -2.56% | | Equity | Track |
| STX | SHIELD THERAPEUTICS PLC ORD 1.5P | GBX | 97.67 | 44.00 | -1.25 | -2.76% | | Equity | Track |
| SHOE | SHOE ZONE PLC ORD 1P | GBX | 37.99 | 72.50 | -3.50 | -4.61% | | Equity | Track |
| SGM | SIGMA CAPITAL GROUP PLC ORD 1P | GBX | 133.59 | 149.00 | - | - | | Equity | Track |
| SRC | SIGMAROC PLC ORD 1P | GBX | 229.96 | 82.50 | - | - | | Equity | Track |
| SLN | SILENCE THERAPEUTICS PLC ORD 5P | GBX | 454.15 | 533.00 | 25.00 | 4.92% | | Equity | Track |
| SAE | SIMEC ATLANTIS ENERGY LIMITED ORD NPV (DI) | GBX | 43.73 | 9.25 | 0.49 | 5.59% | | Equity | Track |
| SIM | SIMIGON LD ORD ILS0.01 (DI) | GBX | 2.92 | 5.75 | - | - | | Equity | Track |
| SBTX | SKINBIOTHERAPEUTICS PLC ORD 1P | GBX | 98.77 | 65.00 | 2.00 | 3.17% | | Equity | Track |
| SLNG | SLINGSBY(H.C.) PLC ORD 25P | GBX | 2.52 | 240.00 | - | - | | Equity | Track |
| SMS | SMART METERING SYSTEMS PLC ORD 1P | GBX | 943.00 | 830.00 | -5.00 | -0.60% | | Equity | Track |
| SMRT | SMARTSPACE SOFTWARE PLC ORD SHS 10P | GBX | 40.26 | 145.00 | 2.50 | 1.75% | | Equity | Track |
| SOLI | SOLID STATE PLC ORD 5P | GBX | 75.70 | 875.00 | -10.00 | -1.13% | | Equity | Track |
| SOM | SOMERO ENTERPRISE INC COM STK USD0.001 (DI) | GBX | 224.73 | 400.00 | - | - | | Equity | Track |
