| # | Tower | No | Year | Materials | Maker | Trusses | Layout |
| 4951 | Laleston, Bridgend, Mid Glamorgan, Wales, S David | 1 | c1949 | Cast iron | ? John Taylor & Co | | |
| 4952 | Lamas, Norfolk, S Andrew | 1 | 1949 | Cast iron | Gillett & Johnston | | |
| 4953 | Lamberhurst, Kent, S Mary | 1 | 1925 | Cast iron | Gillett & Johnston | 8.3.C.e | 6.1 |
| 4954 | Lambourn, Berkshire, S Michael & All Angels | 1 | 1892 | Cast iron | John Warner & Sons | 8.3.A.e | 8.3 |
| 4955 | Lamerton, Devon, S Peter | 1 | 1878 | Oak | John Warner & Sons | 6.A | 6.4 |
| 4956 | Lamerton, Devon, S Peter | 1.1 | 1878 | Cast iron | Nicholls, Matthews and Co | 8.3.A.e | |
| 4957 | Lamplugh, Cumbria, S Michael | 1 | | Stone | | 9.A | 2.X1 |
| 4958 | Lamport, Northamptonshire, All Saints | 1 | | Oak | | 6.A | 4.2 R |
| 4959 | Lamyatt, Somerset, S Mary & S John | 1 | c1719 | Oak | | | 3.1 |
| 4960 | Lancaster, Lancashire, Priory Ch of S Mary | 2 | 2006 | Steel | John Taylor & Co | 8.1.F.e | 2.X1 |
| 4961 | Lancaster, Lancashire, Priory Ch of S Mary | 1 | 1886 | Cast iron | John Taylor & Co | 8.3.C.b | 8.3 |
| 4962 | Lanchester, Durham, All Saints | 1 | 2006 | Steel | Hayward Mills Associates | 8.1.B.a | 6.X ➔ 8.3 |
| 4963 | Lanchester, Durham, All Saints | 1A | 2008 | Steel | Hayward Mills Associates | 8.1.B.a | 2.X1 |
| 4964 | Landbeach, Cambridgeshire, All Saints | 2 | 2024 | Steel | Nicholson Engineering Ltd | 8.1.B.a | 2.X |
| 4965 | Landbeach, Cambridgeshire, All Saints | 1 | 1929 | Cast iron | John Taylor & Co | 8.3.C.e | 4.3 |
| 4966 | Landkey, Devon, S Paul | 1 | c1824 | Oak | | 6.A | ~ 6.13 |
| 4967 | Landrake, Cornwall, S Michael | 1 | | Timber | | 5.A | 1 |
| 4968 | Landulph, Cornwall, S Leonard & S Dilpe | 1 | 1936 | Cast iron | John Taylor & Co | 8.3.A.h | 6.1 |
| 4969 | Landwade, Suffolk, Chapel of S Nicholas | 1 | c1850 | Oak | | 6.E | 3.1 |
| 4970 | Lane End, Buckinghamshire, Holy Trinity | 2 | 1878 | Timber | G Oliver | 6.S.3 | |
| 4971 | Lane End, Buckinghamshire, Holy Trinity | 1 | 1878 | Timber | G Oliver | 6.A | 5.1 |
| 4972 | Laneham, Nottinghamshire, S Peter | 1 | | Timber | | 6.B | ~ 4.4 |
| 4973 | Langar, Nottinghamshire, S Andrew | 1 | 1859 | Oak | John Taylor & Co | | |
| 4974 | Langdon Hills, Essex, S Mary V & All Saints | 1 | c1880 | Oak | Mears & Stainbank | 6.A | 6.7 |
| 4975 | Langford, Essex, S Giles | 9 | | | | | |
| 4976 | Langford, Essex, S Giles | 2 | 1881 | Oak | John Taylor & Co | 6.A | |
| 4977 | Langford, Essex, S Giles | 1 | 1881 | Oak | John Taylor & Co | 6.A | |
| 4978 | Langford Budville, Somerset, S Peter | 2 | 1753† | Oak | John Kebby | | 6 D |
| 4979 | Langford Budville, Somerset, S Peter | 1 | 1992 | Steel | Robert Parker | | |
| 4980 | Langham, Essex, S Mary V | 2 | c1897 | Cast iron | John Taylor & Co | 8.3.A.h | |
| 4981 | Langham, Essex, S Mary V | 1 | c1897 | Cast iron | John Taylor & Co | 8.3.C.e | 4.3 |
| 4982 | Langham, Norfolk, S Andrew & S Mary | 1 | | Oak | | 5.L | 4.1 |
| 4983 | Langham, Rutland, S Peter & S Paul | 1 | 1900 | Metal | John Taylor & Co | | 6.12 |
| 4984 | Langham, Suffolk, S Mary V | 1 | | Stone | | 9.A | 2.X1 |
| 4985 | Langley, Essex, S John Ev | 1 | c1799 | Oak | | 6.A | 4.3 |
| 4986 | Langley, Norfolk, S Michael | 1 | 1852 | | | | |
| 4987 | Langley Burrell, Wiltshire, S Peter | 1 | 1630† | | | | |
| 4988 | Langleybury, Hertfordshire, S Paul | 1 | 1986 | | Eayre & Smith | | 6.1 |
| 4989 | Langport, Somerset, All Saints | 1 | 1912 | Oak | John Sully | | 8 |
| 4990 | Langthwaite, North Yorkshire, S Mary | 1 | c1824 | Timber | (unidentified) | | 3 |
| 4991 | Langtoft, East Riding of Yorkshire, S Peter | 1 | 1711 | Timber | | 5 | 2.X1 |
| 4992 | Langtoft, Lincolnshire, S Michael | 4 | 1785 | Timber | Edward Arnold | 6.A | |
| 4993 | Langtoft, Lincolnshire, S Michael | 2 | 2004 | | John Taylor & Co | | |
| 4994 | Langtoft, Lincolnshire, S Michael | 1 | 2004 | Cast iron | John Taylor & Co | | |
| 4995 | Langton by Partney, Lincolnshire, S Peter & S Paul | 1 | 1825 | Timber | Robert Willerton | | 6.7 |
| 4996 | Langton by Wragby, Lincolnshire, S Giles | 1 | 1822 | Timber | James III Harrison | 6.A | 4.3 |
| 4997 | Langton Long Blandford, Dorset, All Saints | 1 | c1861 | Timber | | | |
| 4998 | Langtree, Devon, All Saints | 1 | 1905 | Cast iron & oak | Harry Stokes | 8.3.A.i | ~ 6.14 |
| 4999 | Lanhydrock, Cornwall, S Hyderock | 1 | 1888 | Cast iron | John Taylor & Co | | |
| 5000 | Lanreath, Cornwall, S Marnarck | 1 | 1913 | Cast iron | Mears & Stainbank | 8.3.A.e | 6.1 |