List of current bus operators of the United Kingdom
- This list is a structured list of current operators, for an alphabetically ordered index of current and former operators, see List of bus operators of the United Kingdom
Most bus services in the United Kingdom are run by the Big Five, five large groups of companies which emerged in the 1990s from the consolidation of bus companies privatised in the 1980s. These groups are all focused on transport. Some of them also run rail services, express coach services and overseas transport companies.