| Name | Code | Last | Cur | M. cap. | Industry |
|---|
| Mobile Streams PLC | XLON:MOS | 0.46 | GBP | 49 | Integrated Telecommunications Services |
| Mobile Tornado Group PLC | XLON:MBT | 1.48 | GBP | 7 | Software |
| MobilityOne Ltd | XLON:MBO | 2.00 | GBP | 2 | Business Support Services |
| Mobius Investment Trust PLC | XLON:MMIT | 147.00 | GBP | 208 | Collective Investments |
| Mode Global Holdings PLC | XLON:MODE | 2.25 | GBP | 2 | Software |
| Molten Ventures PLC | XLON:GROW | 277.00 | GBP | 631 | Investment Management & Fund Operators |
| Molten Ventures VCT PLC | XLON:MVCT | 38.50 | GBP | 130 | Investment Management & Fund Operators |
| Mondi PLC | XLON:MNDI | 1,176.00 | GBX | 12,766 | Containers & Packaging |
| Moneysupermarket.Com Group PLC | XLON:MONY | 182.80 | GBP | 1,207 | Online Services |
| Monks I.T. | XLON:MNKS | 1,266.00 | GBP | | |
| Montanaro European Smaller Companies Trust PLC | XLON:MTE | 142.00 | GBP | 330 | Collective Investments |
| Montanaro UK Smaller Companies Investment Trust PLC | XLON:MTU | 101.50 | GBP | 208 | Investment Management & Fund Operators |
| Moonpig Group PLC | XLON:MOON | 203.50 | GBP | 858 | Other Retailers |
| Morgan Advanced Materials PLC | XLON:MGAM | 269.00 | GBP | 935 | Industrial Machinery & Equipment |
| Morgan Sindall Group PLC | XLON:MGNS | 3,700.00 | GBP | 2,140 | Engineering & Construction |
| Mortgage Advice Bureau (Holdings) PLC | XLON:MAB1 | 632.00 | GBP | 450 | Investment Management & Fund Operators |
| Mosman Oil and Gas Ltd | XLON:MSMN | 0.03 | GBP | 8 | Oil and Gas Exploration & Production |
| Mothercare PLC | XLON:MTC | 3.90 | GBP | 26 | Apparel |
| Motorpoint Group PLC | XLON:MOTR | 130.00 | GBP | 135 | Car retailers |
| Mountfield Group Plc | XLON:HELD | 0.95 | GBP | 1 | Pharmaceuticals |
| Mountview Estates P.L.C. | XLON:MTVW | 9,000.00 | GBP | 431 | Other REITs |
| MPAC Group PLC | XLON:MPAC | 555.00 | GBP | 205 | Industrial Machinery & Equipment |
| M P Evans Group PLC | XLON:MPE | 958.00 | GBP | 614 | Fishing & Farming |
| MS International PLC | XLON:MSI | 985.00 | GBP | 193 | Heavy Machinery & Vehicles |
| MTI Wireless Edge Ltd | XLON:MWE | 49.50 | GBP | 52 | Networking & Communications |
| Mulberry Group PLC | XLON:MUL | 108.50 | GBP | 93 | Apparel |
| Murray International Trust PLC | XLON:MYI | 256.00 | GBP | 1,898 | Collective Investments |
| Murray Intl | XLON:MUT | 822.00 | GBP | | |
| Murray Investment Trust | XLON:MYI | 256.00 | GBP | | |
| musicMagpie PLC | XLON:MMAG | 8.95 | GBP | 10 | Other Retailers |
| M Winkworth PLC | XLON:WINK | 195.00 | GBP | 30 | Other REITs |
| Mycelx Technologies Corp | XLON:MYX | 37.50 | GBP | 10 | Environmental Services & Equipment |
| Myhealthchecked PLC | XLON:MHC | 13.00 | GBP | 8 | Medical Equipment |
| N4 Pharma PLC | XLON:N4P | 0.60 | GBP | 2 | Pharmaceuticals |
| NAHL Group PLC | XLON:NAH | 68.50 | GBP | 40 | Marketing & Advertising |
| Naked Wines PLC | XLON:WINE | 45.00 | GBP | 40 | Distillers & Wineries |
| Nanoco Group PLC | XLON:NANO | 13.41 | GBP | 32 | Semiconductors |
| Narf Industries PLC | XLON:NARF | 0.48 | GBP | 9 | Software |
| National Express Group PLC | XLON:MCG | 74.70 | GBP | 562 | |
| National Grid PLC | XLON:NG. | 1,113.20 | GBP | 11,332 | Multiline Utilities |
| National World PLC | XLON:NWOR | 22.30 | GBP | 73 | Consumer Publishing |
| Nationwide Building Society | XLON:NBS | 129.30 | GBP | 16 | Consumer Lending |
| NB Distressed Debt Investment Fund Ltd | XLON:NBDD | 0.62 | GBP | 0 | Collective Investments |
| NB Distressed Debt Investment Fund Ltd | XLON:NBDX | 0.70 | GBP | 0 | Collective Investments |
| NB Distressed Debt Investment Fund Ltd | XLON:NBDG | 32.00 | GBP | 0 | Collective Investments |
| NB Private Equity Partners Ltd | XLON:NBPU | 19.00 | GBP | 10 | Collective Investments |
| N Brown Group PLC | XLON:BWNG | 39.60 | GBP | 223 | Apparel Retailers |
| NCC Group PLC | XLON:NCC | 138.40 | GBP | 535 | IT Services & Consulting |
| Netcall PLC | XLON:NET | 109.00 | GBP | 221 | Software |
| Netscientific PLC | XLON:NSCI | 52.50 | GBP | 15 | Medical Equipment |