| # | Tower | No | Year | Materials | Maker | Trusses | Layout |
|---|
| 3901 | Hardwick, Buckinghamshire, S Mary V | 9 | | | | | |
| 3902 | Hardwick, Buckinghamshire, S Mary V | 1 | 1911 | Steel | Alfred Bowell | 8.1.C | 6.4 |
| 3903 | Hardwick, Cambridgeshire, S Mary | 1 | c1400 | Oak | | 6.H & 6.S | 3.1 D |
| 3904 | Hardwicke, Gloucestershire, S Nicholas | 1 | 1927 | Cast iron | John Taylor & Co | 8.3.C.e | 6.1 |
| 3905 | Harefield, Greater London, S Mary V | 1 | 1963 | Cast iron | Mears & Stainbank | 8.3.A.h | 6.1 |
| 3906 | Haresfield, Gloucestershire, S Peter | 1 | 1953 | Cast iron | Mears & Stainbank | 8.3.A.h | 6.4 |
| 3907 | Hargrave, Northamptonshire, All Saints | 2 | c1870 | Softwood | | 6.S | |
| 3908 | Hargrave, Northamptonshire, All Saints | 1 | c1870 | Softwood | | 6.S | |
| 3909 | Hargrave, Suffolk, S Edmund K&M | 1 | c1500 | Oak | | 10 | 3.1 |
| 3910 | Harkstead, Suffolk, S Mary | 1 | 1899 | Timber | Alfred Bowell | 6.A | 6.4 |
| 3911 | Harlaston, Staffordshire, S Matthew | 1 | 1883 | Timber | John Taylor & Co (Bellfounders) Ltd | 6.A | 3.1 |
| 3912 | Harlaxton, Lincolnshire, S Mary & S Peter | 1 | 1925 | Metal | John Taylor & Co | | |
| 3913 | Harlestone, Northamptonshire, S Andrew | 2 | 1889 | Oak | ? George Eaton | 6.A | 4.2 R |
| 3914 | Harlestone, Northamptonshire, S Andrew | 1 | 1889 | Oak | ? George Eaton | 6.A | |
| 3915 | Harlington, Greater London, S Peter & S Paul | 9 | | | | | |
| 3916 | Harlington, Greater London, S Peter & S Paul | 1 | 1904 | Cast iron | Mears & Stainbank | | 6.1 ➔ 8.3 |
| 3917 | Harlington, Greater London, S Peter & S Paul | 1.1 | 1946 | Cast iron | Mears & Stainbank | | 2.X2 |
| 3918 | Harlow, Essex, S Mary & S Hugh | 8 | | | | | |
| 3919 | Harlow, Essex, S Mary & S Hugh | 1 | 1883 | Timber | John Warner & Sons | 6.A | 8.3 |
| 3920 | Harlow, Essex, S Mary & S Hugh | 1.1 | | Timber | | | |
| 3921 | Harlow Common, Essex, S Mary Magd | 1 | 1905 | Cast iron & steel | John Taylor & Co | 8.3.C.e | 8.3 |
| 3922 | Harmston, Lincolnshire, All Saints | 1 | 1914 | Cast iron | John Taylor & Co | | |
| 3923 | Harnhill, Gloucestershire, S Michael & All Angels | 1 | c1399† | Oak | | 3.D | 2.X1 |
| 3924 | Harpenden, Hertfordshire, S John Bapt | 1 | | Steel | | 10 | |
| 3925 | Harpenden, Hertfordshire, S Nicholas | 5 | | Steel | | 8.1.A | |
| 3926 | Harpenden, Hertfordshire, S Nicholas | 1 | 1898 | Cast iron | John Warner & Sons | 8.3.A.e | 8.3 |
| 3927 | Harpford, Devon, S Gregory Gt | 2 | | Cast iron | Gillett & Johnston | 8.3.D.a | |
| 3928 | Harpford, Devon, S Gregory Gt | 1 | | Cast iron | Gillett & Johnston | 8.3.D.a | |
| 3929 | Harpham, East Riding of Yorkshire, S John of Beverley | 1 | | Timber | | 6.A | 3.1 |
| 3930 | Harpley, Norfolk, S Lawrence | 1 | | Timber | | | 5.X |
| 3931 | Harpole, Northamptonshire, All Saints | 2 | 1995 | Cast iron | John Taylor & Co | 8.3.A.h | |
| 3932 | Harpole, Northamptonshire, All Saints | 1 | 1931 | Cast iron | John Taylor & Co | 8.3.A.h | 5.1 |
| 3933 | Harrietsham, Kent, S John Bapt | 1 | 1742 | Timber | Thomas Lester | | |
| 3934 | Harrington, Lincolnshire, S Mary | 1 | 2000 | Steel | Eayre & Smith | | 6 |
| 3935 | Harrington, Northamptonshire, S Peter & S Paul | 1 | 1817 | Oak | | 6.B | 6.1 |
| 3936 | Harringworth, Northamptonshire, S John Bapt | 1 | 1913 | Metal | Mears & Stainbank | | |
| 3937 | Harrogate, North Yorkshire, S Peter | 1 | 1963 | Cast iron | John Taylor & Co | 8.3.A.h | 8.3 |
| 3938 | Harrogate, North Yorkshire, S Wilfrid | 8 | | Steel | | 8.1.A | |
| 3939 | Harrogate, North Yorkshire, S Wilfrid | 1 | 1972 | Keruing | Locally manufactured | 6.A | 8.1 |
| 3940 | Harrold, Bedfordshire, S Peter & All Saints | 1 | 1898 | Cast iron | John Taylor & Co | 8.3.C.e | 6.1 |
| 3941 | Harrow on the Hill, Greater London, S Mary | 1 | 1961 | Metal | John Taylor & Co | | |
| 3942 | Harrow Weald, Greater London, All Saints | 1 | 1935 | Cast iron | John Taylor & Co | | |
| 3943 | Harston, Cambridgeshire, All Saints | 2 | c1634† | Oak | | 5.A | 4.2 |
| 3944 | Harston, Cambridgeshire, All Saints | 1 | 1937 | Cast iron | John Taylor & Co | 8.3.A.h | 6.1 |
| 3945 | Hartest, Suffolk, All Saints | 1 | 1953 | Cast iron | John Taylor & Co | 8.3.A.h | 6.1 |
| 3946 | Hartfield, East Sussex, S Mary | 1 | 1924 | Timber | Whites of Appleton | 6.A | 8.3 |
| 3947 | Hartford, Cambridgeshire, All Saints | 1 | c1896 | Steel | Henry Bond | 8.1.A.a & 8.1.A.b | 6.1 |
| 3948 | Hartham Park, Wiltshire, Chapel | 1 | 1861 | Timber | George Mears | | 3.1 |
| 3949 | Harthill, South Yorkshire, All Hallows | 1 | 1937 | Steel | Gillett & Johnston | 8.1.B.d | 8.3 |
| 3950 | Hartland, Devon, S Nectan | 9 | | | | | |