TfL has engaged the National Crime Agency in order to deal with a suspected cyber attack and assess the level of damage the breach may have caused.

Shashi Verma, TfL’s Chief Technology Officer, explained that early indications suggested that customer data had not been compromised.

“We have introduced a number of measures to our internal systems to deal with an ongoing cyber security incident. The security of our systems and customer data is very important to us and we will continue to assess the situation throughout and after the incident. Although we’ll need to complete our full assessment… there is currently no impact to TfL services and we are working closely with the National Crime Agency and the National Cyber Security Centre to respond to the incident.”

In the summer a potentially similar cyber attack led to more than 10,000 NHS appointments being cancelled.