| Name | Type |
|---|---|
| Horseshoe Bend Buttress, South Cheddar Gorge | Guidebook |
| Idwal (revision 1936) (1940) | Guidebook |
| Ilkley Eliminates (2008) | Guidebook |
| Into the Blue (1996) | Guidebook |
| Kilkenny Nore, Portishead | Guidebook |
| Ladye Bay Climbs | Guidebook |
| Leicestershire Climbs (1993) | Guidebook |
| Leighon Tor Bouldering | Guidebook |
| Littaford Tor, Longaford Tor Bouldering | Guidebook |
| Llanberis (1987) | Guidebook |
| Llanberis North (1964 reprint with appendix) (1961) | Guidebook |
| Llanberis Pass (1978) | Guidebook |
| Llanberis Pass (1994) | Guidebook |
| Llanberis Pass (1981) | Guidebook |
| Llanberis Pass (1955 reprint with appendix of new routes) (1950) | Guidebook |
| Llanberis South (1966) | Guidebook |
| Llangattock Update 2014 (2014) | Guidebook |
| Lliwedd (1972) | Guidebook |
| Lliwedd (1998) | Guidebook |
| Lliwedd (1954 reprint) (1939) | Guidebook |