| Marldon & Littlehempston | Electoral ward | E05010139 |
| Marlow | Electoral ward | E05013153 |
| Marple North | Electoral ward | E05015029 |
| Marple South & High Lane | Electoral ward | E05015030 |
| Marsden & Southfield | Electoral ward | E05013208 |
| Marsh | Electoral ward | E05014898 |
| Marsh Mill | Electoral ward | E05009943 |
| Marshalls & Rise Park | Electoral ward | E05013977 |
| Marshalswick East & Jersey Farm | Electoral ward | E05013958 |
| Marshalswick West | Electoral ward | E05013959 |
| Marshchapel & Somercotes | Electoral ward | E05009889 |
| Marshes | Electoral ward | E05005772 |
| Marshwood Vale | Electoral ward | E05012707 |
| Marston | Electoral ward | E05013109 |
| Martins Wood | Electoral ward | E05004810 |
| Martlesham & Purdis Farm | Electoral ward | E05015549 |
| Martley | Electoral ward | E05015391 |
| Martock | Electoral ward | E05014369 |
| Marton | Electoral ward | E05015197 |
| Marton East | Electoral ward | E05015468 |
| Marton West | Electoral ward | E05009865 |
| Marwood | Electoral ward | E05012430 |
| Mary Tavy | Electoral ward | E05010559 |
| Maryland | Electoral ward | E05013917 |
| Marylebone | Electoral ward | E05013801 |
| Maryport North | Electoral ward | E05014200 |
| Maryport South | Electoral ward | E05014201 |
| Mash Barn | Electoral ward | E05007569 |
| Masham & Fountains | Electoral ward | E05014292 |
| Massingham with Castle Acre | Electoral ward | E05012339 |
| Matchborough | Electoral ward | E05007877 |
| Matlock East & Tansley | Electoral ward | E05014604 |
| Matlock West | Electoral ward | E05014605 |
| Matson, Robinswood and White City | Electoral ward | E05010961 |
| Mattishall | Electoral ward | E05010251 |
| Maun Valley Forest Town | Electoral ward | E05014625 |
| Mawneys | Electoral ward | E05013978 |
| Maxton & Elms Vale | Electoral ward | E05012862 |
| May Bank | Electoral ward | E05011427 |
| Mayesbrook | Electoral ward | E05014065 |
| Mayfield | Electoral ward | E05011248 |
| Mayfield & Five Ashes | Electoral ward | E05011653 |
| Mayland | Electoral ward | E05004200 |
| Maypole & Leyton Cross | Electoral ward | E05012402 |
| Maze Hill | Electoral ward | E05011209 |
| Meadows | Electoral ward | E05012285 |
| Meads | Electoral ward | E05011577 |
| Meadvale & St John's | Electoral ward | E05012880 |
| Mease Valley | Electoral ward | E05010667 |
| Measham North | Electoral ward | E05010117 |
| Measham South | Electoral ward | E05010118 |
| Meden | Electoral ward | E05014626 |
| Medlar-with-Wesham | Electoral ward | E05014548 |
| Medlock Vale | Electoral ward | E05014655 |
| Meir Hay North, Parkhall & Weston Coyney | Electoral ward | E05014580 |
| Meir North | Electoral ward | E05014581 |
| Meir Park | Electoral ward | E05014582 |
| Meir South | Electoral ward | E05014583 |
| Melbourn | Electoral ward | E05011300 |
| Melbourne | Electoral ward | E05008815 |
| Melcombe Regis | Electoral ward | E05012708 |
| Melksham East | Electoral ward | E05013833 |
| Melksham Forest | Electoral ward | E05013446 |
| Melksham South | Electoral ward | E05013447 |
| Melksham Without North & Shurnhold | Electoral ward | E05013448 |
| Melksham Without West & Rural | Electoral ward | E05013449 |
| Mellor | Electoral ward | E05012014 |
| Melton | Electoral ward | E05015550 |
| Melton Craven | Electoral ward | E05005501 |
| Melton Dorian | Electoral ward | E05005502 |
| Melton Egerton | Electoral ward | E05005503 |
| Melton Newport | Electoral ward | E05005504 |
| Melton Sysonby | Electoral ward | E05005505 |
| Melton Warwick | Electoral ward | E05005506 |
| Mendip | Electoral ward | E05012474 |
| Mendip Central and East | Electoral ward | E05014370 |
| Mendip Hills | Electoral ward | E05014371 |
| Mendip South | Electoral ward | E05014372 |
| Mendip West | Electoral ward | E05014373 |
| Mendlesham | Electoral ward | E05012603 |
| Meole | Electoral ward | E05008171 |
| Meols | Electoral ward | E05000945 |
| Meopham North | Electoral ward | E05014917 |
| Meopham South & Vigo | Electoral ward | E05014918 |
| Meppershall & Shillington | Electoral ward | E05014417 |
| Mercian | Electoral ward | E05007071 |
| Mere | Electoral ward | E05013450 |
| Meriden | Electoral ward | E05001293 |
| Meriden | Electoral ward | E05011050 |
| Merrow | Electoral ward | E05014952 |
| Merry Hill | Electoral ward | E05014849 |
| Mersea and Pyefleet | Electoral ward | E05010833 |
| Mersey & Weston | Electoral ward | E05013184 |
| Mersham, Sevington South with Finberry | Electoral ward | E05011760 |
| Merton Park | Electoral ward | E05013820 |
| Messingham | Electoral ward | E05015090 |
| Metheringham Rural | Electoral ward | E05014438 |
| Methwold | Electoral ward | E05012340 |
| Mevagissey & St Austell Bay | Electoral ward | E05013846 |
| Mexborough | Electoral ward | E05010739 |
| Micklegate | Electoral ward | E05010325 |
| Mickleham, Westcott & Okewood | Electoral ward | E05015353 |
| Mickleover | Electoral ward | E05015520 |
| Mid Craven | Electoral ward | E05014294 |
| Mid Holderness | Electoral ward | E05001701 |
| Mid Test | Electoral ward | E05012098 |
| Middle Deal | Electoral ward | E05012863 |
| Middle Park & Horn Park | Electoral ward | E05014085 |
| Middleforth | Electoral ward | E05010229 |
| Middleton Cheney | Electoral ward | E05013260 |
| Middleton Park | Electoral ward | E05011404 |
| Middleton-on-Sea | Electoral ward | E05009815 |
| Middlewich | Electoral ward | E05008640 |
| Midhurst | Electoral ward | E05011679 |
| Midsomer Norton North | Electoral ward | E05012475 |
| Midsomer Norton Redfield | Electoral ward | E05012476 |
| Midway | Electoral ward | E05008816 |
| Mildenhall Great Heath | Electoral ward | E05012786 |
| Mildenhall Kingsway & Market | Electoral ward | E05012787 |
| Mildenhall Queensway | Electoral ward | E05012788 |
| Mildmay | Electoral ward | E05013709 |
| Mile Cross | Electoral ward | E05012907 |
| Mile End | Electoral ward | E05009327 |
| Mile End | Electoral ward | E05010834 |
| Miles Platting & Newton Heath | Electoral ward | E05011371 |
| Milford | Electoral ward | E05010493 |
| Milford & Hordle | Electoral ward | E05014787 |
| Milford & Witley | Electoral ward | E05015168 |
| Milkstone & Deeplish | Electoral ward | E05014042 |
| Mill Hill | Electoral ward | E05012864 |
| Mill Hill | Electoral ward | E05013645 |
| Mill Hill & Moorgate | Electoral ward | E05011520 |
| Mill Lane | Electoral ward | E05014627 |
| Millbrook | Electoral ward | E05015498 |
| Millfield | Electoral ward | E05001161 |
| Millom | Electoral ward | E05014202 |
| Millom Without | Electoral ward | E05014203 |
| Milnrow & Newhey | Electoral ward | E05014043 |
| Milnshaw | Electoral ward | E05005214 |
| Milton | Electoral ward | E05002218 |
| Milton | Electoral ward | E05002450 |
| Milton | Electoral ward | E05014788 |
| Milton & Tamarside | Electoral ward | E05011925 |
| Milton & Waterbeach | Electoral ward | E05011301 |
| Milton Ford | Electoral ward | E05010560 |
| Milton Regis | Electoral ward | E05009553 |
| Milton-under-Wychwood | Electoral ward | E05006643 |
| Milwich | Electoral ward | E05010494 |
| Minchinhampton | Electoral ward | E05013192 |
| Mincinglake and Whipton | Electoral ward | E05011015 |