 Rathbones Group PLC | RAT | GB0002148343 | |
 RC Fornax PLC | RCFX | GB00BTTQ2F04 | |
 RC365 Holding PLC | RCGH | GB00BMG8BL95 | |
| Reabold Resources PLC | RBD | GB00BVK55Z16 | |
| Reach PLC | RCH | GB0009039941 | |
 React Group PLC | REAT | GB00BPCTRB97 | |
| Real Estate Credit Investments Limited | RECI | GB00B0HW5366 | |
 Real Estate Investors PLC | RLE | GB00B45XLP34 | |
 Reckitt Benckiser Group PLC | RKT | GB00BSZBP530 | |
| Record PLC | REC | GB00B28ZPS36 | |
| Red Rock Resources PLC | RRR | GB00BYWKBV38 | |
 Redcentric PLC | RCN | GB00BVV5L858 | |
 Regional REIT Limited | RGL | GG00BSY2LD72 | |
 Relx PLC | REL | GB00B2B0DG97 | |
 Renalytix PLC | RENX | GB00BYWL4Y04 | |
 Renew Holdings PLC | RNWH | GB0005359004 | |
 Renishaw PLC | RSW | GB0007323586 | |
 Rentguarantor Holdings PLC | RGG | GB00BSVJ8W91 | |
 Rentokil Initial PLC | RTO | GB00B082RF11 | |
| Residential Secure Income PLC | RESI | GB00BYSX1508 | |
 Resolute Mining Limited | RSG | AU000000RSG6 | |
 Restore PLC | RST | GB00B5NR1S72 | |
 Revolution Beauty Group PLC | REVB | GB00BP7L1T61 | |
 RHI Magnesita N.V. | RHIM | NL0012650360 | |
 Richmond Hill Resources PLC | RHR | GB00BNTBWF32 | |
 Ricoh Co Ltd | RICO | JP3973400009 | |
 Rift Helium PLC | RIFT | GB00BVRY9595 | |
 Rightmove PLC | RMV | GB00BGDT3G23 | |
| Rights and Issues Investment Trust PLC | RIII | GB0007392078 | |
 Rio Tinto PLC | RIO | GB0007188757 | |
 RIT Capital Partners PLC | RCP | GB0007366395 | |
 River Global PLC | RVRB | GB00BTDR2S27 | |
 River Global PLC | RVRG | GB00BTDR2R10 | |
| River UK Micro Cap Limited | RMMC | GG00BNDMJP11 | |
 Riverstone Credit Opportunities Income PLC | RCOI | GB00BRBWLX34 | |
 Riverstone Energy Limited | RSE | GG00BWZ6KH33 | |
 RM Infrastructure Income PLC | RMII | GB00BYMTBG55 | |
| RM plc | RM. | GB00BJT0FF39 | |
 Roadside Real Estate PLC | ROAD | GB00BL6TZZ70 | |
 Robert Walters PLC | RWA | GB0008475088 | |
 Robinson PLC | RBN | GB00B00K4418 | |
 Rockfire Resources PLC | ROCK | GB00B42TN250 | |
 Rockhopper Exploration PLC | RKH | GB00B0FVQX23 | |
 Rockpool Acquisitions PLC | ROC | GB00BF2MWC40 | |
 Rockwood Strategic PLC | RKW | GB00BRRD5L66 | |
 Rolls Royce Holdings PLC | RR. | GB00B63H8491 | |
| Rome Resources PLC | RMR | GB00BYY0JQ23 | |
 Rosebank Industries PLC | ROSE | JE00BSBJ5M88 | |
| Rosslyn Data Technologies PLC | RDT | GB00BMV2DB09 | |
 Rotork plc | 76ID | GB0007530149 | |
 Rotork PLC | ROR | GB00BVFNZH21 | |
 Roundhouse AI LTD. | ETHL | SGXZ84721265 | |
 RS Group PLC | RS1 | GB0003096442 | |
 RTC Group PLC | RTC | GB0002920121 | |
 RTW Biotech Opportunities Ltd | RTW | GG00BKTRRM22 | |
 RUA Life Sciences PLC | RUA | GB0033360586 | |
 Ruffer Investment Company Limited | RICA | GB00B018CS46 | |
 RWS Holdings PLC | RWS | GB00BVFCZV34 | |
 S & U plc | 46IE | GB0007655250 | |
 S & U plc | 47IE | GB0007655474 | |
 S U plc | SUS | GB0007655037 | |
 S-Ventures Plc | SVEN | GB00BN29LY68 | |
 S4 Capital PLC | SFOR | GB00BFZZM640 | |
 Sabien Technology Group PLC | SNT | GB00BN6JG812 | |
| Sabre Insurance Group PLC | SBRE | GB00BYWVDP49 | |
 Safestay PLC | SSTY | GB00BKT0J702 | |
 Safestore Holdings PLC | SAFE | GB00B1N7Z094 | |
 Saga PLC | SAGA | GB00BMX64W89 | |
 Sainsbury (J) PLC | SBRY | GB00B019KW72 | |
 Sancus Lending Group Limited | LEND | GB00B0CL3P62 | |
 Sanderson Design Group PLC | SDG | GB0003061511 | |
 Santander UK PLC | SANB | GB0000044221 | |
 Sareum Holdings PLC | SAR | GB00BMC3RJ87 | |
 Satsuma Technology PLC | SATS | GB00BMFCRZ80 | |
 Savannah Energy PLC | SAVE | GB00BP41S218 | |
 Savannah Resources PLC | SAV | GB00B647W791 | |
 Savills PLC | SVS | GB00B135BJ46 | |
 Scancell Holdings PLC | SCLP | GB00B63D3314 | |
 Schroder Asian Total Return Investment Company plc | ATR | GB0008710799 | |
 Schroder Asiapacific Fund PLC | SDP | GB0007918872 | |
 Schroder British Opportunities Trust PLC | SBO | GB00BN7JZR28 | |
 Schroder BSC Social Impact Trust PLC | SBSI | GB00BF781319 | |
 Schroder European Real Estate Investment Trust PLC | SERE | GB00BY7R8K77 | |
 Schroder Income Growth Fund PLC | SCF | GB0007915860 | |
 Schroder Japan Trust PLC | SJG | GB0008022849 | |
 Schroder Oriental Income Fund Limited | SOI | GB00B0CRWN59 | |
 Schroder Real Estate Investment Trust Limited | SREI | GB00B01HM147 | |
 Schroder UK Mid Cap Fund PLC | SCP | GB0006108418 | |
 Schroders Capital Global Innovation Trust plc | INOV | GB00BVG1CF25 | |
 Schroders PLC | SDR | GB00BP9LHF23 | |
 Science Group PLC | SAG | GB00B39GTJ17 | |
 Scottish American Investment Co PLC | SAIN | GB0007873697 | |
 Scottish Mortgage Investment Trust PLC | SMT | GB00BLDYK618 | |
 Scottish Oriental Smaller Companies Trust PLC | SST | GB00BRBL6574 | |
 Sdcl Efficiency Income Trust PLC | SEIT | GB00BGHVZM47 | |
 SDI Group PLC | SDI | GB00B3FBWW43 | |
 Sealand Capital Galaxy Limited | SCGL | KYG7948E1026 | |
 Seascape Energy Asia PLC | SEA | GB00BKFW2482 | |
| Secure Property Development Investment PLC | SPDI | CY0102102213 | |
 Secure Trust Bank PLC | STB | GB00B6TKHP66 | |
