A violent fight erupted on a London Underground train, captured in a viral video. The British Transport Police are investigating, urging witnesses to come forward. The incident raises concerns about public transport safety. br br Follow Oneindia English for all live updates. br br #London #wrestlemani #Undergroundtrain #LondonTrain #Britishnews #Viralnews #Worldnews #Oneindia #Oneindianews br ~ED.