Resident parking permit costs increase across London
Councils in London have generated over £186m in revenue from parking permits in the last three years according to a series of Freedom of Information requests from BBC Inside Out.
Across London as a whole, the total amount raised from permits has increased each year for the past three years.
In 10 London boroughs, the cost of a resident permit has increased by more than 50% between 2008 and 2011.
The biggest increase was in Barnet where permits increased by 150% from £40 to £100 in a single year.
Barnet Council say they have increased prices to bring them in line with other councils.
Joanne Good investigates.
Inside Out London is broadcast on Monday, 28 November and can be seen on the BBC iPlayer nationwide for seven days thereafter.