Police have described the clips as “distressing” and “widely circulated” online.
Chief Superintendent of the British Transport Police, Chris Casey, wrote on X of the videos: “This is not acceptable. We’ve launched an investigation.
“If anyone has witnessed this, please report to @BTP by texting 61016.”
Two days later the force announced it had made an arrest.
A spokesperson for BTP said in a full statement: “We are appealing for victims and witnesses following a spate of incidents on the London Underground.
“Officers investigating a series of distressing incidents where a man appears to scare lone females while sitting next to them on tube trains have made an arrest.
“The videos have been widely shared on social media and officers are now appealing to victims and witnesses to come forward.
“If you have any information that can assist this investigation please text 61016 or call 0800 40 50 40 quoting reference 2500129554.”
