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| Parent | ComfortDelGro |
|---|---|
| Founded | 1 April 1989 |
| Headquarters | Cricklewood |
| Service area | Greater London Hertfordshire |
| Service type | Bus services |
| Depots | 13 |
| Fleet | 1,429 (March 2023) |
| Fuel type | Diesel, Hybrid, Electric and Hydrogen |
| Managing Director | Stephen Harris |
| Website | www |
Metroline is a bus operator which operates bus services in Greater London and Hertfordshire. It is a subsidiary of ComfortDelGro and primarily operates bus services under contract to Transport for London and also to Hertfordshire County Council. Operations are split between two registered companies, Metroline Travel Limited and Metroline West Limited.