| # | Tower | No | Year | Materials | Maker | Trusses | Layout |
|---|
| 4451 | Hythe, Kent, S Leonard | 1 | 1928 | | Mears & Stainbank | | |
| 4452 | Ibstock, Leicestershire, S Denys | 1 | 1905 | Cast iron | ? John Taylor & Co | 8.3.C.e | 6.4 |
| 4453 | Ibstone, Buckinghamshire, S Nicholas | 1 | c1799 | Timber | | 5.A | 2 |
| 4454 | Ickburgh, Norfolk, S Peter | 1 | | | | | 3 D |
| 4455 | Ickford, Buckinghamshire, S Nicholas | 1 | 1907 | Timber | Whites of Appleton | 6.A | 3.1 |
| 4456 | Ickleford, Hertfordshire, S Katharine | 1 | | Timber | | | |
| 4457 | Ickleton, Cambridgeshire, S Mary Magd | 1 | 1927 | Cast iron | Gillett & Johnston | 8.3.A.m | 8.3 |
| 4458 | Ickworth, Suffolk, S Mary | 1 | | Timber | | 5.A | 1 |
| 4459 | Idbury, Oxfordshire, S Nicholas | 9 | | Stone | | | |
| 4460 | Idbury, Oxfordshire, S Nicholas | 1 | c1860 | Composite | Henry Bond | 7.C.c | 3.3 |
| 4461 | Iddesleigh, Devon, S James | 1 | 1904 | Oak | Harry Stokes | 6.B | 6.5 R |
| 4462 | Ide, Devon, S Ida | 2 | 1880 | | Thomas II Hooper/Harry Stokes | | |
| 4463 | Ide, Devon, S Ida | 1 | 1880 | Oak | Thomas II Hooper/Harry Stokes | 6.S | 5.1 |
| 4464 | Ideford, Devon, S Mary V | 1 | 1988 | Steel | Whitechapel Bell Foundry | 8.1.B.c | |
| 4465 | Iden, East Sussex, All Saints | 2 | 1909 | Steel | Alfred Bowell | 8.1.F | 1 |
| 4466 | Iden, East Sussex, All Saints | 1 | | Timber | | 6.H | 5.1 |
| 4467 | Idle, West Yorkshire, Holy Trinity | 2 | 1914 | Cast iron | John Taylor & Co | 8.3.D.a | |
| 4468 | Idle, West Yorkshire, Holy Trinity | 1 | 1914 | Cast iron | John Taylor & Co | 8.3.D.a | |
| 4469 | Iffley, Oxfordshire, S Mary V | 1 | 1911 | Oak | Richard White | | |
| 4470 | Ifield, West Sussex, S Margaret | 1 | 1884 | Timber | ? Gillett & Johnston | 1.D.iii | 2.X2 |
| 4471 | Iford, East Sussex, S Nicholas | 1 | c1225† | Oak | | 5.D | 3.1 |
| 4472 | Ightham, Kent, S Peter | 1 | | Teak | | | |
| 4473 | Iken, Suffolk, S Botolph | 1 | 1880 | Timber | George Day & Sons | 6.A | 5.1 |
| 4474 | Ilam, Staffordshire, Holy Cross | 1 | 1856 | Oak | ? John Taylor & Co | 6.A | 5.1 |
| 4475 | Ilchester, Somerset, S Mary Major | 1 | 1938 | Cast iron | Gillett & Johnston | | 5.11 |
| 4476 | Ilford, Greater London, S Mary | 9 | 1981 | Steel | Locally manufactured | | |
| 4477 | Ilford, Greater London, S Mary | 1 | 1981 | Steel | Locally manufactured | 8.1.F.e | 8.3 |
| 4478 | Ilfracombe, Devon, Holy Trinity | 1 | 1930 | Cast iron | John Taylor & Co | 8.3.C.e | 8.3 |
| 4479 | Ilfracombe, Devon, S Philip & S James | 2 | 1923 | Oak | Llewellins & James | 6.A | |
| 4480 | Ilfracombe, Devon, S Philip & S James | 1 | 1876 | Oak | Llewellins & James | 6.A | 6.1 |
| 4481 | Ilkeston, Derbyshire, S Mary V | 1 | 1910 | Cast iron | John Taylor & Co | 8.3.C.e | 8.3 |
| 4482 | Ilketshall St Andrew, Suffolk, S Andrew | 1 | 1890 | Oak | | 6.A | 4.6 |
| 4483 | Ilketshall St Lawrence, Suffolk, S Lawrence | 1 | c1700 | Oak | | 6.A | 2.X1 |
| 4484 | Ilketshall St Margaret, Suffolk, S Margaret | 1 | c1599 | Oak | | ~ 5.O | 3.3 |
| 4485 | Ilkley, West Yorkshire, All Saints | 1 | 1939 | Cast iron | John Taylor & Co | 8.3.A.h | 8.3 |
| 4486 | Illogan, Cornwall, S Illogan | 2 | 1889 | Oak | William Aggett and Sons | 6.A | 4.3 |
| 4487 | Illogan, Cornwall, S Illogan | 1 | 1889 | Oak | William Aggett and Sons | 6.A | |
| 4488 | Illston on the Hill, Leicestershire, S Michael & All Angels | 2 | 1946 | Cast iron | John Taylor & Co | 8.3.A.h | |
| 4489 | Illston on the Hill, Leicestershire, S Michael & All Angels | 1 | 1932 | Cast iron | John Taylor & Co | 8.3.C.e | 5.1 |
| 4490 | Ilmington, Warwickshire, S Mary | 1 | 1952 | Cast iron | John Taylor & Co | | 8 |
| 4491 | Ilminster, Somerset, Blessed Virgin Mary | 1 | 1902 | Cast iron | John Taylor & Co | 8.3.C.e | 8.3 |
| 4492 | Ilsington, Devon, S Michael | 2 | 1926 | Cast iron | Gillett & Johnston | 8.3.A.m | 1 |
| 4493 | Ilsington, Devon, S Michael | 1 | 1947 | Cast iron | Gillett & Johnston | 8.3.C.e | 5.1 |
| 4494 | Ilton, Somerset, S Peter | 2 | 1962 | Cast iron | John Taylor & Co | | |
| 4495 | Ilton, Somerset, S Peter | 1 | 1962 | Cast iron | John Taylor & Co | | |
| 4496 | Imber, Wiltshire, S Giles | 2 | 2010 | Steel | Matthew Higby & Co | 8.1.B | |
| 4497 | Imber, Wiltshire, S Giles | 1 | c1824 | Timber | | 6.A | 5.1 |
| 4498 | Immingham, Lincolnshire, S Andrew | 1 | 1986 | Cast iron & steel | Fred Pembleton | | |
| 4499 | Impington, Cambridgeshire, S Andrew | 1 | 1925 | Cast iron | John Taylor & Co | 8.3.A.h | 3.1 |
| 4500 | Ingatestone, Essex, S Edmund & S Mary | 1 | 1875 | Timber | ? John Warner & Sons | 6.A | 5.1 |