It's your signal, you'll keep it working and keep millions of people safe. And you'll do it every day.

There are thousands of signals across our network, and every day we are checking, testing, cleaning and fixing signals throughout the country. It involves integrated electronic control centres, panel signal boxes and manual lever frame boxes. The work is varied and highly important – and ranges from checking signals and testing circuits to fixing faults that need urgent attention.

The signalling systems play a critical role in our network, from ensuring the safe spacing of trains to making sure that trains switch from one track to another, from alerting signallers to train movements to warning drivers or stopping trains automatically.

As ever, the work is critical and is always conducted with the highest levels of safety in mind. And of course you will be working shifts.