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The number of people taken to hospital following injury on or by London buses has surged by nearly 40 per cent.

Figures released by Transport for London show more than 400 people needed to be taken to hospital following incidents involving buses between April and June – up from 293 in the same period last year.

Four people died in bus crashes during the last quarter, compared with one in April to June 2014.

The latest figures also reveal for the first time the number of people who suffered minor injuries on the bus network and were treated at the scene. In total, just over 1,500 people were injured during the three-month period – the equivalent of 2.6 injuries per million passenger journeys.

Route 73, linking Victoria to Stoke Newington, racked up more injuries than any other route – 23, just edging out the 275 from Walthamstow to Barkingside, which was involved in 22.

Westminster was the borough that saw the most incidents. More than 100 were reported within its borders in three months.

Revealed: London bus routes and boroughs with most bus-related injuries, April to June 2015 Routes with most injuries Route 73 (Stoke Newington to Victoria)

23 injuries Route 275 (Walthamstow to Barkingside)

22 injuries Route 24 (Grosvenor Road to the Royal Free Hospital)

17 injuries Route 237 (Hounslow to White City)

16 injuries Route 60 (Streatham to Old Coulsdon)

15 injuries Boroughs with most injuries Westminster: 109 Croydon: 79 Ealing: 76 Lambeth: 75 Barnet: 71

Leon Daniels, managing director of surface transport at TfL, said: “Any injury involving our buses is one too many.

“That is why we continue to invest in the highest quality bus driver training and a range of safety initiatives such as ‘intelligent speed adaptation’ to make bus travel even safer.

“We will continue to work hard to meet the Mayor's target of reducing the number of people killed or seriously injured on the capital's roads by 50 per cent by 2020.”

Of the 1,502 people hurt on or by buses, 777 were recorded as having slipped, tripped or fallen. Of those, 194 required hospital treatment, while the remainder were treated there and then.

The injured parties include 1,212 passengers, 106 pedestrians, 104 bus drivers, 19 cyclists and five motorcyclists. Two hundred and ninety-eight were hurt in crashes, while 37 were victims of assault.

The data also show an increase in injuries compared with January to March – something the transport authority blames on an increase in passenger numbers.

Among the victims were 122 children and 169 elderly people.

TfL pointed out it has launched a course for bus drivers called “in the zone” to make them more aware of pedestrians and cyclists, and trialled a new system to automatically detect them in the area around the bus.

Intelligent speed adaptation, being trialled on two routes, automatically caps the speed of a bus based on local speed limits.