 M C Saatchi PLC | SAA | GB00B01F7T14 | |
 M Winkworth PLC | WINK | GB00B4TT7L53 | |
 M.P. Evans Group plc | MPE | GB0007538100 | |
 M&G Credit Income Investment Trust plc | MGCI | GB00BFYYL325 | |
 M&G plc | MNG | GB00BKFB1C65 | |
 MAC Alpha Limited | MACA | VGG5869Z1045 | |
 Macau Property Opportunities Fund Limited | MPO | GG00BGDYFV61 | |
 Macaulay Capital PLC | MCAP | GB00BNKBMF25 | |
 Macfarlane Group plc | MACF | GB0005518872 | |
 Made Tech Group plc | MTEC | GB00BLGYDT21 | |
 Maintel Holdings plc | MAI | GB00B046YG73 | |
| Majedie Investments plc | MAJE | GB0005555221 | |
 Majestic Corporation Plc | MCJ | GB00BN70W297 | |
 Malibu Life Holdings Limited | MLHL | KYG8827C1006 | |
 Malvern International plc | MLVN | GB00BNBVJZ07 | |
 MAN Group plc | EMG | JE00BJ1DLW90 | |
 Manchester & London Investment Trust plc | MNL | GB0002258472 | |
 Manolete Partners plc | MANO | GB00BYWQCY12 | |
| Mantle Resilience Plc | MNTL | GB00BWYF7709 | |
 Manx Financial Group plc | MFX | IM00B28ZPX83 | |
 Marechale Capital plc | MAC | GB0005401087 | |
 Marks and Spencer Group plc | MKS | GB0031274896 | |
 Marks Electrical Group plc | MRK | GB00BM8Q5G47 | |
 Marshalls plc | MSLH | GB00B012BV22 | |
 Marston's plc | 92IP | GB0009772459 | |
 Marston's plc | MARS | GB00B1JQDM80 | |
 Marula Mining PLC | MARU | GB00BNBS4S95 | |
 Maruwa CO. Ltd | MAW | JP3879250003 | |
 Marwyn Acquisition Company III Limited | MAC3 | VGG5878H1038 | |
 Marwyn Value Investors Limited | MVI | KYG5897M1740 | |
 Marwyn Value Investors Limited | MVIR | KYG5897M2326 | |
| Marwyn Value Investors Limited | MVR2 | KYG5897M2243 | |
 Maven Income & Growth VCT 4 plc | MAV4 | GB00B043QW84 | |
 Maven Income & Growth VCT plc | MIG1 | GB0004122858 | |
 Maven Income and Growth VCT 3 plc | MIG3 | GB0031153769 | |
 Maven Income and Growth VCT 5 plc | MIG5 | GB0002057536 | |
 Maven Renovar VCT PLC | MRV | GB00B641BB82 | |
 Mayflower Acquisition Limited | MAY | VGG59Y661097 | |
 Mcbride plc | MCB | GB0005746358 | |
 ME Group International plc | MEGP | GB0008481250 | |
 Mears Group plc | MER | GB0005630420 | |
| Mediazest plc | MDZ | GB00B064NT52 | |
 Medpal AI PLC | MPAL | GB00BTRC7N37 | |
 Meikles Limited | MIK | ZW0009012114 | |
 Melrose Industries plc | MRO | GB00BNGDN821 | |
| Mendell Helium plc | MDH | GB00BLD3FF28 | |
 Mercantile Investment Trust (The) plc | MRC | GB00BF4JDH58 | |
 Mercantile Ports & Logistics Limited | MPL | GG00BKSH7R87 | |
 Merchants Trust plc | 72HN | GB0005800296 | |
 Merchants Trust plc | MRCH | GB0005800072 | |
 Mercia Asset Management plc | MERC | GB00BSL71W47 | |
 Meridian Mining plc | MNO | GB00BVPND783 | |
 Metals Exploration plc | MTL | GB00B0394F60 | |
 Metals One plc | MET1 | GB00BSY1D385 | |
 Metir PLC | MET | GB00BMWC8365 | |
 Metlen Energy & Metals PLC | MTLN | GB00BTQGS779 | |
 Metro Bank Holdings plc | MTRO | GB00BMX3W479 | |
 MHA plc | MHA | GB00BV0VHK88 | |
 Michael Page plc | PAGE | GB0030232317 | |
 Michelmersh Brick Holdings plc | MBH | GB00B013H060 | |
 Microlise Group PLC | SAAS | GB00BLR8L223 | |
| Microsalt PLC | SALT | GB00BQB6FF85 | |
 Mid-Wynd International Investment Trust plc | MWY | GB00B6VTTK07 | |
 Middlefield Canadian Income PCC | MCTA | JE00BTNNPW55 | |
| Middlefield Canadian Income PCC | MCTB | JE00BTNNPV49 | |
 Midwich Group plc | MIDW | GB00BYSXWW41 | |
 Migo Opportunities Trust plc | MIGO | GB0034365949 | |
 Mila Resources plc | MILA | GB00BD4FCK53 | |
 Milton Capital plc | MII | GB00BMWLC750 | |
 Mincon Group plc | MCON | IE00BD64C665 | |
 Mind GYM plc | MIND | GB00BF3SQB83 | |
 Mindflair PLC | MFAI | GB00BD07SH45 | |
 Mineral & Financial Investments Limited | MAFL | KYG6181G1055 | |
 Mirriad Advertising plc | MIRI | GB00BF52QY14 | |
 Mitchells & Butlers plc | MAB | GB00B1FP6H53 | |
 Mitie Group plc | MTO | GB0004657408 | |
| Miton UK Microcap Trust plc | MINB | GB00BQSB9879 | |
 Miton UK MicroCap Trust plc | MINA | GB00BQSB9762 | |
 MJ Gleeson plc | GLE | GB00BRKD9Z53 | |
 Mkango Magnetic Materials Limited | MKA | CA60686A4090 | |
 Mobico Group plc | MCG | GB0006215205 | |
 Mobilityone Limited | MBO | JE00B1Z48326 | |
 Mobius Investment Trust plc | MMIT | GB00BFZ7R980 | |
 MOH Nippon PLC | MOH | GB00BMYX7295 | |
| Molecule Group PLC | MOL | GB00BTQLZH16 | |
 Mollyroe plc | MOY | GB00BRC0TZ46 | |
 Molten Ventures plc | GROW | GB00BY7QYJ50 | |
 Molten Ventures VCT plc | MVCT | GB0002867140 | |
 Mondi plc | MNDI | GB00BMWC6P49 | |
 Monks Investment Trust plc | MNKS | GB0030517261 | |
 Montanaro European Smaller Companies Trust plc | MTE | GB00BM8H3X05 | |
 Montanaro UK Smaller Companies Investment Trust plc | MTU | GB00BZ1H9L86 | |
 MONY Group plc | MONY | GB00B1ZBKY84 | |
 Moonpig Group plc | MOON | GB00BMT9K014 | |
 Morgan Advanced Materials plc | BA05 | GB0006026446 | |
 Morgan Advanced Materials plc | BA29 | GB0006026669 | |
 Morgan Advanced Materials plc | MGAM | GB0006027295 | |
 Morgan Sindall Group plc | MGNS | GB0008085614 | |
 Mortgage Advice Bureau (Holdings) plc | MAB1 | GB00BQSBH502 | |
 Mothercare plc | MTC | GB0009067447 | |
