Network Rail
My Sentinel
An update to the Sentinel App has been issued. This update should resolve the problem reported by some users where the app was crashing during the initial start-up.
Please make sure you have downloaded the latest version of the app to implement this update.
Please report any issues to the 24/7 Helpdesk via the 24/7 Helpdesk - Tel: 0330 7262 222 or Email:
2016 4 Oct

Upgraded app – available to download now!

Posted in Communications

A real achievement…

We are happy to confirm that the upgraded Sentinel mobile app – which is designed to manage fatigue and prevent double-shifting by identifying when track workers has not had sufficient rest – has been released today! It can be downloaded / updated for free from the app store.

Initial feedback…

This Sentinel upgrade project, named Site Access, has been in progress for approx three years now and it is positive to hear the initial industry feedback.  It is being well received because users can see the safety benefits that the app offers, including surfacing accurate competence / medical information and the ability to record competence usage electronically.

Help and support…

There are various supporting documents if users are having difficulty with the upgraded app. We have tried to cater for all learning styles – from high level to very detailed and comprehensive – and here are the top few we recommend to use:

In addition to these materials we have created some FAQs or you can call the 24/7 Sentinel Helpdesk.


Sentinel is critical…

Remember that Sentinel is safety tool for Controllers of Site Safety (COSS), Training Providers / Assessors and Site Access Controllers and this short video emphasises the importance of it.