 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 | |
 Macfarlane Group plc | MACF | GB0005518872 | |
| Majedie Investments plc10P | MAJE | GB0005555221 | |
 MAN Group plc | EMG | JE00BJ1DLW90 | |
 Manchester & London Investment Trust plc | MNL | GB0002258472 | |
 Marks and Spencer Group plc | MKS | GB0031274896 | |
 Marshalls plc | MSLH | GB00B012BV22 | |
 Marston's plc | MARS | GB00B1JQDM80 | |
 Marwyn Acquisition Company III Limited | MAC3 | VGG5878H1038 | |
 Marwyn Value Investors Limited | MVI | KYG5897M1740 | |
 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 | |
 Mcbride plc | MCB | GB0005746358 | |
 ME Group International plc | MEGP | GB0008481250 | |
 Mears Group plc | MER | GB0005630420 | |
 Melrose Industries plc | MRO | GB00BNGDN821 | |
 Mercantile Investment Trust (The) plc | MRC | GB00BF4JDH58 | |
 Merchants Trust plc | MRCH | GB0005800072 | |
 Meridian Mining plc | MNO | GB00BVPND783 | |
 Metro Bank Holdings plc | MTRO | GB00BMX3W479 | |
 Michael Page plc | PAGE | GB0030232317 | |
 Mid-Wynd International Investment Trust plc | MWY | GB00B6VTTK07 | |
 Middlefield Canadian Income PCCRED PART PREF SHS NPV A RIGHTS | MCTA | JE00BTNNPW55 | |
 Migo Opportunities Trust plc | MIGO | GB0034365949 | |
 Mila Resources plc | MILA | GB00BD4FCK53 | |
 Milton Capital plc | MII | GB00BMWLC750 | |
 Mitchells & Butlers plc | MAB | GB00B1FP6H53 | |
 Mitie Group plc | MTO | GB0004657408 | |
 Miton UK MicroCap Trust plc | MINA | GB00BQSB9762 | |
 MJ Gleeson plc | GLE | GB00BRKD9Z53 | |
 Mobico Group plc | MCG | GB0006215205 | |
 Mobius Investment Trust plc | MMIT | GB00BFZ7R980 | |
 MOH Nippon PLC | MOH | GB00BMYX7295 | |
 Molten Ventures plc | GROW | GB00BY7QYJ50 | |
 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 | MGAM | GB0006027295 | |
 Morgan Sindall Group plc | MGNS | GB0008085614 | |
 Mortgage Advice Bureau (Holdings) plc | MAB1 | GB00BQSBH502 | |
 Motorpoint Group plc | MOTR | GB00BD0SFR60 | |
| Mountview Estates plc | MTVW | GB0006081037 | |
 Murray Income Trust plc | MUT | GB0006111123 | |
 Murray International Trust plc | MYI | GB00BQZCCB79 | |
