|
# | Tower | Bell | Weight | Note | Diameter | Cast | Founder |
| 41101 | Oaks in Charnwood, Leicestershire, S James Greater | 8 of 8 | 10–1–12 | A♭ | 38.50″ | 1883 | John Taylor & Co |
| 41102 | Oaksey, Wiltshire, All Saints | 1 of 6 | 3–2–25 | E♯ | 26.13″ | 1773 | Thomas Rudhall |
| 41103 | Oaksey, Wiltshire, All Saints | 2 of 6 | 4–0–14 | D♯ | 27.63″ | 1773 | Thomas Rudhall |
| 41104 | Oaksey, Wiltshire, All Saints | 3 of 6 | 4–1–7 | C♯ | 29.00″ | 1773 | Thomas Rudhall |
| 41105 | Oaksey, Wiltshire, All Saints | 4 of 6 | 5–1–11 | B♯ | 30.00″ | 1960 | John Taylor & Co |
| 41106 | Oaksey, Wiltshire, All Saints | 5 of 6 | 7–1–7 | A♯ | 33.63″ | 1960 | John Taylor & Co |
| 41107 | Oaksey, Wiltshire, All Saints | 6 of 6 | 9–3–12 | G♯ | 37.00″ | 1960 | John Taylor & Co |
| 41108 | Oakworth, West Yorkshire, Christ Church | 1 of 1 | 12 cwt | F♯ | 45.00″ | 1862 | Naylor, Vickers & Co |
| 41109 | Oamaru, South Island, New Zealand, The Kowhai Mini-Ring | 1 of 8 | | G | | 2017 | Matthew Higby & Co |
| 41110 | Oamaru, South Island, New Zealand, The Kowhai Mini-Ring | 2 of 8 | | F♯ | | 2017 | Matthew Higby & Co |
| 41111 | Oamaru, South Island, New Zealand, The Kowhai Mini-Ring | 3 of 8 | | E | | 2017 | Matthew Higby & Co |
| 41112 | Oamaru, South Island, New Zealand, The Kowhai Mini-Ring | 4 of 8 | | D | | 2017 | Matthew Higby & Co |
| 41113 | Oamaru, South Island, New Zealand, The Kowhai Mini-Ring | 5 of 8 | | C | | 2017 | Matthew Higby & Co |
| 41114 | Oamaru, South Island, New Zealand, The Kowhai Mini-Ring | 6 of 8 | | B | | 2017 | Matthew Higby & Co |
| 41115 | Oamaru, South Island, New Zealand, The Kowhai Mini-Ring | 7 of 8 | | A | | 2017 | Matthew Higby & Co |
| 41116 | Oamaru, South Island, New Zealand, The Kowhai Mini-Ring | 8 of 8 | 10 lb 3 oz | G | | 2017 | Matthew Higby & Co |
| 41117 | Oare, Berkshire, S Bartholomew | 1 of chime | | | | 1880 | John Warner & Sons |
| 41118 | Oare, Kent, S Peter | 1 of 1 | 2½ cwt | | 21.88″ | c1499† | Unidentified (blank) |
| 41119 | Oare, Somerset, Blessed Virgin Mary | 1 of chime | 4–0–23 | F♯ | 26.38″ | 1873 | John Taylor & Co |
| 41120 | Oare, Somerset, Blessed Virgin Mary | 2 of chime | 4–3–11 | E | 28.38″ | 1873 | John Taylor & Co |
| 41121 | Oare, Somerset, Blessed Virgin Mary | 3 of chime | 5–3–22 | D | 31.50″ | 1873 | John Taylor & Co |
| 41122 | Oare, Somerset, Blessed Virgin Mary | Clock | 1½ cwt | | 19.00″ | 1770 | Thomas Bayley |
| 41123 | Oare, Wiltshire, Holy Trinity | 1 of chime | | | 14.00″ | c1858 | John Warner & Sons |
| 41124 | Oatlands Park, Surrey, S Mary | 1 of 8 | 3–3–17 | G | | 1911 | John Warner & Sons |
| 41125 | Oatlands Park, Surrey, S Mary | 2 of 8 | 4–0–20 | F♯ | | 1911 | John Warner & Sons |
| 41126 | Oatlands Park, Surrey, S Mary | 3 of 8 | 4–3–9 | E | | 1911 | John Warner & Sons |
| 41127 | Oatlands Park, Surrey, S Mary | 4 of 8 | 5–2–25 | D | | 1911 | John Warner & Sons |
| 41128 | Oatlands Park, Surrey, S Mary | 5 of 8 | 6–1–10 | C | | 1911 | John Warner & Sons |
| 41129 | Oatlands Park, Surrey, S Mary | 6 of 8 | 7–2–13 | B | | 1911 | John Warner & Sons |
| 41130 | Oatlands Park, Surrey, S Mary | 7 of 8 | 9–0–11 | A | | 1911 | John Warner & Sons |
| 41131 | Oatlands Park, Surrey, S Mary | 8 of 8 | 12–0–12 | G | | 1911 | John Warner & Sons |
| 41132 | Oborne, Dorset, S Cuthbert New Church | 1 of chime | 1–1–18 | A | 18.88″ | 1939 | John Taylor & Co |
| 41133 | Oborne, Dorset, S Cuthbert Old Church | 1 of chime | ¾ cwt | E | 15.25″ | | Unidentified (blank) |
| 41134 | Occold, Suffolk, S Michael | 1 of 5 | 4¼ cwt | E | 27.25″ | 1653 | John II Brend |
| 41135 | Occold, Suffolk, S Michael | 2 of 5 | 4½ cwt | D | 28.25″ | 1653 | John II Brend |
| 41136 | Occold, Suffolk, S Michael | 3 of 5 | 5½ cwt | C♯ | 31.00″ | 1698 | Charles Newman |
| 41137 | Occold, Suffolk, S Michael | 4 of 5 | 6¾ cwt | B | 33.00″ | 1824 | William Dobson |
| 41138 | Occold, Suffolk, S Michael | 5 of 5 | 8 cwt | A | 36.75″ | 1653 | John II Brend |
| 41139 | Ockbrook, Derbyshire, All Saints | 1 of 6 | 2–3–21 | F♯ | 23.50″ | 1926 | Mears & Stainbank |
| 41140 | Ockbrook, Derbyshire, All Saints | 2 of 6 | 2–3–26 | E | 25.13″ | 1926 | Mears & Stainbank |
| 41141 | Ockbrook, Derbyshire, All Saints | 3 of 6 | 3–2–22 | D | 27.06″ | 1926 | Mears & Stainbank |
| 41142 | Ockbrook, Derbyshire, All Saints | 4 of 6 | 3–2–25 | C♯ | 27.38″ | [1590–1620] | Henry II Oldfield |
| 41143 | Ockbrook, Derbyshire, All Saints | 5 of 6 | 4–1–20 | B | 30.00″ | 1664 | George I Oldfield |
| 41144 | Ockbrook, Derbyshire, All Saints | 6 of 6 | 5–1–26 | A | 33.00″ | 1653† | George I Oldfield |
| 41145 | Ockford Ridge, Surrey, S Mark | 1 of chime | | | | | |
| 41146 | Ockham, Surrey, All Saints | 1 of 6 | 3–1–18 | G♯ | 23.88″ | 1974 | John Taylor & Co |
| 41147 | Ockham, Surrey, All Saints | 2 of 6 | 3¾ cwt | F♯ | 26.75″ | 1850 | Charles & George Mears |
| 41148 | Ockham, Surrey, All Saints | 3 of 6 | 4 cwt | E | 27.50″ | 1850 | Charles & George Mears |
| 41149 | Ockham, Surrey, All Saints | 4 of 6 | 3¼ cwt | D♯ | 26.75″ | 1719 | Richard Phelps |
| 41150 | Ockham, Surrey, All Saints | 5 of 6 | 4–3–16 | C♯ | 28.88″ | 1974 | John Taylor & Co |