The richest 10 per cent of the population receive four times as much public spending on transport as the poorest 10 per cent:

UK Public Spending on Transport by Household Income
This is primarily due to two factors:
1 Poorer households travel less and tend to use buses while richer households travel much further and tend to use private cars and the train,
2 A larger proportion of public spending on transport goes to road and rail travel than to bus services.
Source:
This excellent Sustainable Development Commission Report























