| # | Tower | No | Year | Materials | Maker | Trusses | Layout |
|---|
| 7501 | Siddal, West Yorkshire, S Mark | 2 | | | | | |
| 7502 | Siddal, West Yorkshire, S Mark | 1 | | | | | |
| 7503 | Siddington, Gloucestershire, S Peter | 1 | 1879 | Oak | John Warner & Sons | 6.A | 6.4 |
| 7504 | Sidestrand, Norfolk, S Michael | 1 | | Oak | | 6.A | 3.3 |
| 7505 | Sidmouth, Devon, S Nicholas | 9 | | | | | |
| 7506 | Sidmouth, Devon, S Nicholas | 2 | 1990 | Cast iron | John Taylor & Co | 8.3.A.h | |
| 7507 | Sidmouth, Devon, S Nicholas | 1 | 1972 | Cast iron | John Taylor & Co | 8.3.A.h | 8.3 |
| 7508 | Sigglesthorne, East Riding of Yorkshire, S Lawrence | 1 | 1821 | Timber | | 6.A | 3.1 |
| 7509 | Silchester, Hampshire, S Mary | 1 | 1912 | Steel | Alfred Bowell | 8.1.C.a | 5.1 |
| 7510 | Silkstone, South Yorkshire, All Saints | 1 | 1934 | Cast iron | John Taylor & Co | | |
| 7511 | Silloth, Cumbria, Christ Church | 1 | 1883 | Cast iron | John Taylor & Co | 8.3.C.b | 8.3 |
| 7512 | Silsoe, Bedfordshire, S James Gt | 1 | 1951 | Cast iron | John Taylor & Co | 8.3.A.h | 6.1 |
| 7513 | Silton, Dorset, S Nicholas | 1 | 1900 | Cast iron | Thomas Blackbourn | | |
| 7514 | Silverdale, Lancashire, S John | 1 | 1886 | Oak | ? John Warner & Sons | | |
| 7515 | Silverdale, Staffordshire, S Luke | 1 | 1907 | Cast iron | John Warner & Sons | 8.3.A | 8.3 |
| 7516 | Silverton, Devon, S Mary | 2 | 1937 | Cast iron | John Taylor & Co | 8.3.D.a | |
| 7517 | Silverton, Devon, S Mary | 1 | 1937 | Cast iron | John Taylor & Co | 8.3.D.a | |
| 7518 | Simpson, Buckinghamshire, S Thomas Ap | 2 | 1926 | Steel | Alfred Bowell | 8.1.A.b | 1 |
| 7519 | Simpson, Buckinghamshire, S Thomas Ap | 1 | 1896 | Steel | John Taylor & Co | 8.1.A.a & 8.1.A.b | 5.1 |
| 7520 | Sindlesham, Berkshire, S Catherine, Bearwood | 2 | | | | | |
| 7521 | Sindlesham, Berkshire, S Catherine, Bearwood | 1 | | | | | |
| 7522 | Singapore, Singapore, Cath Ch of S Andrew | 1 | 2019 | Steel | John Taylor & Co | 8.1.B.a | 13 |
| 7523 | Singleton, West Sussex, Blessed Virgin Mary | 1 | 1632 | Timber | A.Aylwin | 5.T | 2.X1 |
| 7524 | Siston, Gloucestershire, S Anne Mother of BVM | 2 | 1991 | Cast iron | John Taylor & Co | 8.3.D.a | 1 |
| 7525 | Siston, Gloucestershire, S Anne Mother of BVM | 1 | 1991 | Cast iron | John Taylor & Co | 8.3.D.a | 5.1 |
| 7526 | Sithney, Cornwall, S Sithney | 1 | 1959 | Timber | Local labour/guild/assn | 5.L | 3.1 |
| 7527 | Sittingbourne, Kent, S Michael | 1 | 1897 | Oak | Mears & Stainbank | 6.D | 8.3 |
| 7528 | Six Mile Bottom, Cambridgeshire, S George | 1 | | Steel | | 8.1.A | |
| 7529 | Sixhills, Lincolnshire, All Saints | 1 | | Timber | James III Harrison | 6.B | 4.3 |
| 7530 | Sixpenny Handley, Dorset, S Mary | 1 | 1881 | Oak | John Warner & Sons | | 6.4 |
| 7531 | Skegby, Nottinghamshire, S Andrew | 1 | | Timber | | | |
| 7532 | Skelbrooke, South Yorkshire, S Michael & All Angels | 1 | 1872 | Timber | | | |
| 7533 | Skelton in Cleveland, North Yorkshire, All Saints | 1 | 1883 | Timber | John Taylor & Co | 6.A | 6.1 ➔ 8.3 |
| 7534 | Skelton in Cleveland, North Yorkshire, All Saints | 1.1 | 1902 | Oak | John Taylor & Co | 6.A | 2.X2 |
| 7535 | Skendleby, Lincolnshire, S Peter & S Paul | 1 | | Timber | | | 3.1 |
| 7536 | Skenfrith, Monmouthshire, Wales, S Bridget | 1 | 2006 | Cast iron | John Taylor & Co | 8.3.A.h | 6.1 |
| 7537 | Sketty, Swansea, West Glamorgan, Wales, S Paul | 1 | 1950 | Cast iron | John Taylor & Co | 8.3.C.e | 8.X11 |
| 7538 | Skibbereen, Cork, Republic of Ireland, Abbeystrewry Church (CI) | 9 | | Steel | | | |
| 7539 | Skibbereen, Cork, Republic of Ireland, Abbeystrewry Church (CI) | 1 | 2001 | Steel | Matthew Higby & Co | 8.1.A.b | 6.1 |
| 7540 | Skilgate, Somerset, S John Bapt | 1 | 1922 | Cast iron | William Aggett and Sons | | |
| 7541 | Skillington, Lincolnshire, S James | 1 | | Timber | | | |
| 7542 | Skipsea, East Riding of Yorkshire, All Saints | 1 | | Timber | | 5.O | 3.3 |
| 7543 | Skipton in Craven, North Yorkshire, Holy Trinity | 1 | 1921 | Cast iron | John Taylor & Co | | |
| 7544 | Skirbeck, Lincolnshire, S Nicholas | 1 | | | | | 6 D |
| 7545 | Skirpenbeck, East Riding of Yorkshire, S Mary | 1 | c1913 | Timber | | 5.A | 2.X1 |
| 7546 | Skirwith, Cumbria, S John Ev | 1 | | | | | |
| 7547 | Slaidburn, Lancashire, S Andrew | 1 | 1843 | Composite | Mears | 6.A | 6 |
| 7548 | Slapton, Buckinghamshire, Holy Cross | 1 | 1889 | Cast iron & timber | Frederick White | 7.A.a | 4.X ➔ 6.X |
| 7549 | Slapton, Buckinghamshire, Holy Cross | 1.1 | 2024 | Cast iron, steel & timber | Blyth & Co | 7.A.a & 8.1.B.a | 2.X1 |
| 7550 | Slapton, Devon, S James Gt | 2 | 1975 | Steel | Arthur Fidler | 8.1.H.b | |