Just looking at the disruptions that are happening on the Liverpool St-Hertford East line this morning. Trains are being re-routed via Hackney Downs, with many cancellations. Looks like more than just one driver is off sick going by the frequency of cancellations. Not expected to have a normal service until 1645. Thought one of the main routes to get to an airport would have had some degree of emergency staffing capacity. Is there industrial action happening?