Stories around our network
![Landscape view of exterior of Severn Bridge Junction signal box, daytime](https://www.networkrail.co.uk/wp-content/uploads/2021/05/SBJ-signal-box-back-hero.jpg)
Stories
Industry-leading
Our railway structures
Refurb of world’s largest working mechanical signal box completes
25 May 2021 | 4 min read
The largest working mechanical signal box in the world has just had its biggest refurbishment in more than a decade….
![Newly laid track](https://www.networkrail.co.uk/wp-content/uploads/2021/03/520-metres-of-new-track-at-Llangennech.jpg)
Stories
From the archive
Industry-leading
Why the end of the gauge war didn’t standardise Britain’s railway
20 May 2021 | 7 min read
The battle to establish a standard gauge between the rails across Britain ended 129 years ago. So why do we…
![The Jacobite steam train crossing the Glenfinnan Viaduct in the Scottish Highlands, daytime](https://www.networkrail.co.uk/wp-content/uploads/2019/08/Harry-Potter-Glenfinnan-Viaduct-film-2.jpg)
Caring for our heritage for the future
7 May 2021 | 4 min read
![An aerial shot of tracks leading into London, with skyscrapers on the horizon.](https://www.networkrail.co.uk/wp-content/uploads/2021/04/An-aerial-shot-of-tracks-leading-into-London-with-skyscrapers-on-the-horizon.-1-scaled.jpeg)
Network Rail invites £1bn private sector investment in telecoms
26 April 2021 | 3 min read
![Aerial shot of the Box Tunnel, daytime](https://www.networkrail.co.uk/wp-content/uploads/2021/04/Box-Tunnel-screen-shot.png)
The Box Tunnel – Brunel builds the impossible
8 April 2021 | 2 min read
![The golden hour on the tracks of the Brighton Main Line with historic pillars either side](https://www.networkrail.co.uk/wp-content/uploads/2021/03/Brighton-Mainline-Upgrade-Ouse-Valley-Oct-10-69.jpg)
What’s a Main Line? Rail history explained
30 March 2021 | 3 min read