It is hoped a new map which allows small businesses to log the effect of parking charges on business will urge councils to take action.
In a survey 75% of small to medium businesses said that parking charges were a major issue for small companies, equal to business rates.
A spokesperson for the FSB said one recent council to make improvements was Wandsworth.
Parking charges were slashed by 50%, this is something the federation wants throughout London, affordable parking to boost trade.
Spokesperson for the FSB said "some councils that have increased parking charges and moved to ticket-less parking machines have seen a decrease in revenue."
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In a wide-ranging Peston on Sunday interview, he said Parliament security needs reviewing and the PM's counter-terror strategy is flawed.
The terror attack carried out by Khalid Masood at Westminster that left four people dead lasted less than two minutes say police.
Two knives were found at the scene in Islington, North London, and the suspects fled on foot before being arrested.