List of founders
| Name | Founding | Group | Location | Bells | Bells Dated | Rings |
|---|---|---|---|---|---|---|
| Joseph Mallows | 1750–1760 | East Dereham | 26 | 1750–1760 | 13 | |
| Stephen March | 1707–1710 | unknown ? Closworth ? | 2 | 1707–1710 | 2 | |
| Marquet | 1828 | Non UK | Villedieu | 2 | 1828 | 2 |
| Henry Marshall | from 1824 | Newcastle upon Tyne | 2 | 1824 | 2 | |
| C Martin | 1843 | Guernsey | 1 | 1843 | 1 | |
| John Martin (generic) | Worcester | 2 | 1680 | 2 | ||
| John I Martin | 1644–1660 | Worcester | Worcester | 42 | 1638–1660 | 32 |
| John II Martin | 1661–1693 | Worcester | Worcester | 92 | 1661–1693 | 64 |
| Martineau & Smith | Birmingham | 2 | 1899 | 1 | ||
| William Mason | 1736–1747 | Carlisle | 1 | 1741 | 1 | |
| Matthew O'Byrne | 1840–1904 | Dublin | 49 | 1891–1937 | 20 | |
| Robert Maxwell | 1711–1728 | Edinburgh | 3 | 1711–1723 | 3 | |
| Henry McShane & Co | Non UK | Baltimore, MD, USA | 10 | 1890 | 1 | |
| Mears (generic) | Whitechapel | Whitechapel | 1 | 1 | ||
| G Mears & Co | 1858–1873 | Whitechapel | Whitechapel | 265 | 1855–1866 | 147 |
| Thomas Mears & Son | 1794–1810 | Whitechapel | Whitechapel | 171 | 1794–1810 | 83 |
| Charles & George Mears | 1843–1861 | Whitechapel | Whitechapel | 1216 | 1841–1868 | 660 |
| George Mears | 1844–1865 | Whitechapel | Whitechapel | 197 | 1850–1865 | 96 |
| Thomas Mears (generic) | Whitechapel | Whitechapel, Middx | 4 | 1791–1827 | 4 | |
| Thomas I Mears | 1787–1806 | Whitechapel | Whitechapel | 273 | 1778–1812 | 155 |
| Thomas II Mears | 1806–1849 | Whitechapel | Whitechapel, Gloucester | 1745 | 1806–1846 | 936 |
| William Mears | 1777–1791 | Whitechapel | Whitechapel | 63 | 1777–1787 | 25 |
| William & Thomas Mears | 1787–1791 | Whitechapel | Whitechapel | 52 | 1787–1794 | 27 |
| Meeks, Watson & Co | from 1991 | Non UK | Georgetown, OH, USA | 2 | 2015 | 1 |
| John Meikle | 1688–1702 | Edinburgh | 1 | 1688 | 1 | |
| Mellours (generic) | Nottingham | Nottingham | 56 | 1499–1550 | 50 | |
| Richard Mellours | 1470–1508 | Nottingham | Nottingham | 22 | 1480–1520 | 22 |
| Robert Mellours | 1508–1525 | Nottingham | Nottingham | 7 | 1510–1522 | 6 |
| Meneely (Troy) | 1871–1951 | Non UK | Troy | 9 | 1900–1929 | 3 |
| Meneely (Watervliet) | 1826–1950 | Non UK | West Troy (later Watervliet) | 2 | 1846–1890 | 2 |
| Meneely (West Troy) | 1839–1951 | Non UK | West Troy, NY, USA | 11 | 1865–1928 | 2 |
| Robert Merston | 1450–1500 | Alford | 5 | 1470–1499 | 4 | |
| Michael de Lichfield | 1280 | Lichfield | 6 | 1320–1499 | 5 | |
| Samuel Midworth | 1811–1851 | Mansfield | 5 | 1811–1843 | 5 | |
| John Mills & Sons | 1864–1868 | Newcastle upon Tyne | 3 | 1864–1868 | 3 | |
| Hayward Mills Associates | 2000–2009 | Nottingham | 33 | 1999–2009 | 19 | |
| Foulk Mitchell | 1500–1554 | Wokingham | Wokingham | 3 | 1530 | 1 |
| John Mitchell | 1483–1494 | Wokingham | Wokingham | 2 | 1490–1493 | 2 |
| James Moon | 1869 | Barnstaple | 1 | 1869 | 1 | |
| Moore, Holmes & Mackenzie | 1879–1885 | Redenhall | 35 | 1878–1883 | 14 | |
| Robert Mot | 1570–1606 | Whitechapel | Houndsditch, Whitechapel | 49 | 1572–1604 | 38 |
| Robert Mot predecessor | 3 | 1567–1575 | 3 | |||
| John Murphy | 1843–1875 | Non UK | Dublin | 47 | 1844–1877 | 17 |
| John J Murphy | 1875–1900 | Non UK | Dublin | 18 | 1875–1893 | 8 |
| Naylor, Vickers & Co | 1855–1874 | Sheffield | 167 | 1850–1899 | 103 | |
| Edward Neale | 1641–1685 | Burford | Burford | 41 | 1641–1690 | 33 |
| Henry Neale | 1627–1640 | Burford | Somerford Keynes, Burford | 10 | 1627–1649 | 8 |
| Robert III Newcombe & Bartholomew Atton | 1585–1590 | Buckingham | 1 | 1585 | 1 | |
| Newcombe & Watts | Leicester | 21 | 1561–1609 | 17 | ||
| Newcombe (generic) | Leicester | Leicester | 126 | 1550–1618 | 109 |