Greater Anglia has reported 77 smoking or vaping incidents, resulting in a £30,000 cost and nearly 13 hours of delays in the last year.
The rail network is now urging against passengers smoking or vaping on trains in behaviour which it describes as "very disappointing".
Matt Wakefield, Greater Anglia head of safety, security, and sustainability, said: "It’s very disappointing that some passengers are smoking on our trains and at our stations.
"This anti-social behaviour leads to delays which affect everyone else travelling on our trains, who may be travelling to work, school, for hospital appointments or to meet family and friends.
"We will not hesitate to take action, such as removing them from our trains or stations, or reporting them to the British Transport Police if we catch anyone smoking or vaping."
Mr Wakefield urges anyone who witnesses such conduct to inform the British Transport Police by texting 61016.
Current measures in place to discourage smokers include "no smoking" signs displayed across the Greater Anglia network and announcements made on trains and stations, reminding passengers that smoking and vaping are prohibited.
The UK's no-smoking laws, which also cover vaping, apply on trains and stations across the entire UK rail system.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules hereLast Updated:
Report this comment Cancel