|
# | Tower | Bell | Weight | Note | Diameter | Cast | Founder |
| 30051 | Osterley, Greater London, S Mary, Osterley Road | 1 of 1 | 8¼ cwt | A | 36.00″ | 1858 | George Mears |
| 30052 | Oswaldtwistle, Lancashire, Immanuel | 1 of 8 | 3–1–16 | G | 24.25″ | 1913 | John Taylor & Co |
| 30053 | Oswaldtwistle, Lancashire, Immanuel | 2 of 8 | 3–3–3 | F♯ | 25.00″ | 1913 | John Taylor & Co |
| 30054 | Oswaldtwistle, Lancashire, Immanuel | 3 of 8 | 4–0–11 | E | 27.13″ | 1878 | John Taylor & Co |
| 30055 | Oswaldtwistle, Lancashire, Immanuel | 4 of 8 | 5–0–19 | D | 29.13″ | 1878 | John Taylor & Co |
| 30056 | Oswaldtwistle, Lancashire, Immanuel | 5 of 8 | 6–0–26 | C | 31.38″ | 1878 | John Taylor & Co |
| 30057 | Oswaldtwistle, Lancashire, Immanuel | 6 of 8 | 6–2–15 | B | 32.38″ | 1878 | John Taylor & Co |
| 30058 | Oswaldtwistle, Lancashire, Immanuel | 7 of 8 | 8–1–2 | A | 35.50″ | 1878 | John Taylor & Co |
| 30059 | Oswaldtwistle, Lancashire, Immanuel | 8 of 8 | 11–0–21 | G | 39.50″ | 1878 | John Taylor & Co |
| 30060 | Oswestry, Shropshire, S Oswald K&M | 1 of 8 | 4–1–16 | F | 27.00″ | 1880 | John Taylor & Co |
| 30061 | Oswestry, Shropshire, S Oswald K&M | 2 of 8 | 4–3–0 | E | 28.00″ | 1717 | Abraham I Rudhall |
| 30062 | Oswestry, Shropshire, S Oswald K&M | 3 of 8 | 5–1–15 | D | 30.00″ | 1717 | Abraham I Rudhall |
| 30063 | Oswestry, Shropshire, S Oswald K&M | 4 of 8 | 6–1–18 | C | 32.00″ | 1717 | Abraham I Rudhall |
| 30064 | Oswestry, Shropshire, S Oswald K&M | 5 of 8 | 6–0–6 | B♭ | 33.50″ | 1846 | Charles & George Mears |
| 30065 | Oswestry, Shropshire, S Oswald K&M | 6 of 8 | 8–1–10 | A | 36.25″ | 1717 | Abraham I Rudhall |
| 30066 | Oswestry, Shropshire, S Oswald K&M | 7 of 8 | 11–3–20 | G | 40.50″ | 1747 | Abel Rudhall |
| 30067 | Oswestry, Shropshire, S Oswald K&M | 8 of 8 | 13–3–19 | F | 44.00″ | 1717 | Abraham I Rudhall |
| 30068 | Otford, Kent, S Bartholomew | 1 of 6 | 4–0–1 | F | 26.06″ | 2000 | Whitechapel Bell Foundry |
| 30069 | Otford, Kent, S Bartholomew | 2 of 6 | 4–2–27 | E♭ | 28.75″ | 1887 | Mears & Stainbank |
| 30070 | Otford, Kent, S Bartholomew | 3 of 6 | 5–0–15 | D♭ | 29.50″ | 2000 | Whitechapel Bell Foundry |
| 30071 | Otford, Kent, S Bartholomew | 4 of 6 | 5–3–15 | C | 31.00″ | 2000 | Whitechapel Bell Foundry |
| 30072 | Otford, Kent, S Bartholomew | 5 of 6 | 7–2–6 | B♭ | 33.75″ | 2000 | Whitechapel Bell Foundry |
| 30073 | Otford, Kent, S Bartholomew | 6 of 6 | 10–1–7 | A♭ | 38.13″ | 1975 | Whitechapel Bell Foundry |
| 30074 | Otham, Kent, S Nicholas | 1 of 6 | 3–1–11 | F♯ | 24.63″ | 2011 | John Taylor & Co |
| 30075 | Otham, Kent, S Nicholas | 2 of 6 | 3–2–7 | E | 25.75″ | 1925 | Alfred Bowell |
| 30076 | Otham, Kent, S Nicholas | 3 of 6 | 4–1–0 | D | 27.25″ | 1925 | Alfred Bowell |
| 30077 | Otham, Kent, S Nicholas | 4 of 6 | 5–0–19 | C♯ | 30.23″ | 1755 | Lester & Pack |
| 30078 | Otham, Kent, S Nicholas | 5 of 6 | 6–1–7 | B | 32.75″ | c1400† | William Dawe |
| 30079 | Otham, Kent, S Nicholas | 6 of 6 | 7–1–3 | A | 35.23″ | 1906 | Mears & Stainbank |
| 30080 | Othery, Somerset, S Michael | 1 of 5 | 6–2–17 | B | 31.63″ | 1692 | Thomas Purdue |
| 30081 | Othery, Somerset, S Michael | 2 of 5 | 7–1–16 | A | 34.25″ | c1650† | Robert II Austen |
| 30082 | Othery, Somerset, S Michael | 3 of 5 | 9 cwt | G♯ | 37.25″ | 1729 | Thomas II Wroth |
| 30083 | Othery, Somerset, S Michael | 4 of 5 | 12 cwt | F♯ | 41.75″ | 1811 | Thomas (Castleman) III Bilbie |
| 30084 | Othery, Somerset, S Michael | 5 of 5 | 18–1–6 | E | 46.50″ | 1785 | William Bilbie |
| 30085 | Otley, Suffolk, S Mary | 1 of 6 | 4–0–11 | E | 27.75″ | 1878 | John Warner & Sons |
| 30086 | Otley, Suffolk, S Mary | 2 of 6 | 4–3–20 | D | 28.50″ | 1933 | John Taylor & Co |
| 30087 | Otley, Suffolk, S Mary | 3 of 6 | 5–3–2 | C | 31.13″ | c1550† | Bury St Edmunds foundry |
| 30088 | Otley, Suffolk, S Mary | 4 of 6 | 6–1–15 | B | 32.75″ | c1500† | Brasyers of Norwich (generic) |
| 30089 | Otley, Suffolk, S Mary | 5 of 6 | 8–0–13 | A | 35.88″ | c1500† | Brasyers of Norwich (generic) |
| 30090 | Otley, Suffolk, S Mary | 6 of 6 | 9–3–18 | G | 39.50″ | 1576† | Stephen II Tonne |
| 30091 | Otley, West Yorkshire, All Saints | 1 of 8 | 4–0–12 | F | 26.00″ | 1922 | Gillett & Johnston |
| 30092 | Otley, West Yorkshire, All Saints | 2 of 8 | 4–1–12 | E | 27.00″ | 1922 | Gillett & Johnston |
| 30093 | Otley, West Yorkshire, All Saints | 3 of 8 | 5–0–0 | D | 29.00″ | 1922 | Gillett & Johnston |
| 30094 | Otley, West Yorkshire, All Saints | 4 of 8 | 5–3–23 | C | 31.25″ | 1922 | Gillett & Johnston |
| 30095 | Otley, West Yorkshire, All Saints | 5 of 8 | 7–1–2 | B♭ | 34.00″ | 1922 | Gillett & Johnston |
| 30096 | Otley, West Yorkshire, All Saints | 6 of 8 | 8–0–19 | A | 35.88″ | 1922 | Gillett & Johnston |
| 30097 | Otley, West Yorkshire, All Saints | 7 of 8 | 11–1–13 | G | 40.25″ | 1922 | Gillett & Johnston |
| 30098 | Otley, West Yorkshire, All Saints | 8 of 8 | 16–0–20 | F | 44.88″ | 1922 | Gillett & Johnston |
| 30099 | Otterford, Somerset, S Leonard | 1 of 4 | 5 cwt | C♯ | 31.00″ | 1676 | Thomas Purdue |
| 30100 | Otterford, Somerset, S Leonard | 2 of 4 | 6¾ cwt | B | 33.38″ | c1499† | Exeter foundry |