The number of penalty charges issued to motorists incorrectly using bus lanes in London rose 8% to 346,860 in 2016-17, research from Click4reg.co.uk has found.
Using data from London councils, the company found Lambeth Council issued the highest number of penalties in this period - 44,148: the equivalent of 121 per day.
Wandworth Council handed out the lowest at 61 in the 12 month period, while Merton saw the biggest increase at 172%.
Elie Fakhoury, managing director of Click4Reg.co.uk, said: “The sheer amount of bus lane penalty charge notices issued in London are certainly more than anyone would expect.
"With driving in the capital already problematic, largely due to the heavy congestion, it seems many drivers are using the bus lane to jump queues and minimise delays to their own trips.
"While many knowingly do so, there are those who are not aware of the infringements they are committing until being fined.
"For such individuals, they should thoroughly educate themselves on bus lane rules, markings and signage.
"Additionally, take careful consideration before following the lead of other vehicles into bus lanes”.