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Scores of activists plan to gather for a “die-in” protest following the deaths of two female cyclists on the streets of London in just 24 hours.

Anita Szucs, 30, was killed in a suspected hit and run crash as she cycled home from work in Enfield in the early hours of Monday morning.

Ms Szucs, who married her husband Tamas Mezo in March last year, suffered critical injuries in the crash in Bounces Road at 1.45am and was later pronounced dead in hospital.

A second woman, aged 32, who has not yet been named, was left fighting for her life after being crushed under a coach on a cycle superhighway in Whitechapel a few hours later. She also later died in hospital.

They are the first cyclists to die on London’s roads this year.

Campaign group Stop Killing Cyclists are planning a huge gathering to pay tribute to the women outside the Treasury on Horseguards Parade on Saturday.

The die-in vigil will coincide with a protest demanding that the Chancellor Philip Hammond increases investment in the UK’s cycling and pedestrian infrastructure to 10 per cent of the transport budget.

Activists will meet outside the National Gallery in Trafalgar Square from 1pm before marching to the Treasury building for the die-in protest.

The “10by2020” event will also feature children playing in gas masks to symbolise young people who are being affected by polluted streets and schools.

Stop Killing Cyclists spokesman Caspar Hughes said: “Air pollution is poisoning millions of people in the UK, whilst traffic carbon emissions are contributing to the climate emergency.

"Road danger means most people do not feel safe cycling on UK roads, which means they lack life-saving physical exercise.”

He added: “There is now an urgent health crisis which is costing the NHS billions.

“It is now crucial that our national cycling infrastructure gets its fair share of national infrastructure investment.”

A spokesman for the campaign group added: “We will be remembering both female cyclists on Saturday at our 10by2020 protest.”

Scotland Yard said on Tuesday that two men, aged 19 and 22, had been arrested on suspicion of causing death by dangerous driving and failing to stop at the scene in connection with the crash involving Ms Szucs.

Detectives continued to investigate and appealed for witnesses to come forward.

The arrested men have been bailed until a date in late March.

The second accident took place near a busy junction on Whitechapel Road at 9am yesterday.

Ten cyclists were known to have died on London’s road last year.

They included Italian prince Filippo Corsini knocked down by a truck in Knightsbridge, and 15-year-old Nahid Islam who was killed by a motorcycle as he cycled to pick up his birthday cake in Belsize Park.

Anyone with any information or who witnessed the collision on Monday is asked to contact detectives from the Serious Collision Investigation Unit at Catford Traffic Garage on 020 8285 1574 or via Twitter @MetCC.