Railway Company Abbreviations
This section lists the abbreviations used for various railways and contracting companies referred to in the index of LB&SCR locomotives.
| A(NSW)DR | Alexandra (Newport and South Wales) Docks & Railway Co. |
| ACC | Ashington Coal Co. |
| ADR | Alexandra Docks Railway |
| BC | Broomhill Colliery |
| BR | British Railways |
| CCC | Cowpen Coal Co. |
| CRC | Cannock & Rugeley Colliery Co. |
| EHLR | Edge Hill Light Railway |
| Frazer | Messers Frazer & Co. |
| FYN | Freshwater, Yarmouth & Newport Railway |
| GWR | Great Western Railway |
| IWCR | Isle of Wight Central Railway |
| JC | Croydon & Dover Joint Committee (1842-05/1844-03), later the Brighton, Croydon & Dover Joint Committee (1844-03/1845-04-12) |
| KESR | Kent & East Sussex Railway |
| L&B | London & Brighton Railway (1839-01-08/1844-03 pre Joint Committee) |
| L&BR | London & Brighton Railway (1845-04-12/1846-10 post Joint Committee) |
| L&C | London & Croydon Railway (1838-07-28/1842-05 pre Joint Committee) |
| L&CR | London & Croydon Railway (1845-04-12/1846-10 post Joint Committee) |
| LMS | London, Midland & Scottish Railway |
| LSWR | London, South Western Railway |
| M&BR | Manchester & Birmingham Railway |
| MS&LR | Manchester, Sheffield and Lincolnshire Railway |
| Pauling | Pauling & Co. |
| R. Madigan | R. Madigan (contractor) |
| RIC | Rhymney Iron Co. |
| SE | South Eastern Railway (1841-12/1842-05) |
| SECR | South Eastern & Chatham Railway (1899/1923) |
| SER | South Eastern Railway (1845-04-12/1898) |
| SMJR | Stratford-on-Avon & Midland Junction Railway |
| SR | Southern Railway (1923/1947) |
| WC&PR | Weston, Clevedon & Portishead Railway |
| WE&CPR | West End & Crystal Palace Railway |
| WLR | West Lancashire Railway |