Two men have been arrested after trolleys and a pram were thrown onto the railway line near Potters Bar.
On 10 occasions between November 2022 and March 2023, items including shopping trolleys, a pram, and a clothes horse were thrown onto the tracks in Hadley Wood, with trains striking the objects four times.
During an operation at the site on April 4, BTP officers, supported by Network Rail staff, arrested a 24-year-old man.
A day later, on April 5, a 26-year-old man was arrested at an address in Barnet, both on suspicion of endangering safety on the railway.
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They have been released from police custody on conditional bail pending further enquiries.
"Obstructing the railway not only causes severe delays to services, but puts the lives of passengers and rail staff at risk," said BTP Sergeant, Rehan Ahmad.
"Everyone has the right to a safe, disruption-free journey, and reckless behaviour like throwing objects onto the line threatens this right.
"If you witness an incident of this nature, please report it to us either by texting 61016 or calling 0800 40 50 40 – we take these reports very seriously and will always take action."
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Sam MacDougall, operations director for Network Rail’s East Coast route, added: "It’s testament to the hard work of both the British Transport Police and Network Rail that these arrests have been made.
"This type of thoughtless behaviour is incredibly dangerous, and causes needless and completely avoidable delays for passengers.
"We’d urge anyone who sees any type of suspicious behaviour on the railway to report it to the British Transport Police."
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