Who we are
About us
Our awards
System Operator
Publications and resources
Our Delivery Plan for 2019-2024
Financial
Regulatory and licensing
Speeches
Our approach to safety
Home Safe Plan
Our safety vision
Safety assurance
Careers
Our business areas
How we recruit
Life at Network Rail
Early Careers
Transparency and ethics
Transparency
Data protection
Ethics
Freedom of information (FOI)
Diversity and inclusion
Everyone strategy
Gender Pay Gap Report
Access and inclusion
Behaviours and benchmarking
Collaboration
Our history
The Network Rail archive
Eminent engineers
Iconic infrastructure
Working with railway heritage
Where to find railway records
Making the connection
Stories around our network
Sustainable development
Running the railway
Our regions
Eastern
North West & Central
Scotland’s Railway
Southern
Wales & Western
Our routes
Anglia
Central
East Coast
East Midlands
Kent
Network Rail High Speed
North & East
North West
Scotland
Sussex
Wales
Wessex
West Coast Mainline South
Western
Looking after the railway
Planned works
Delays explained
Level crossings
Track
Signalling
Bridges, tunnels and viaducts
Our fleet: machines and vehicles
Earthworks: cutting slopes and embankments
Asset management
Asset Protection and Optimisation
The timetable
Electronic national rail timetable
Working timetable
Long-term planning
Railway Upgrade Plan
Key projects
Digital Railway
Safety in our Railway Upgrade Plan
Keeping our workforce safe
GSM-R: the railway’s mobile communication system
GSM-R: for drivers and signallers
GSM-R: future improvements
Train operating companies
Putting passengers first
Communities
Contact us
Passengers
Our stations
Station retail directory
Planning a trip
Station improvements
Living by the railway
Buying property next to the railway
Vegetation
Track renewals
Electrification
Noise and vibration
Level crossing closures
Road and footpath closures
Bridge maintenance
Employee and contractor behaviour
Fencing
Litter and fly-tipping
Environment
Climate change and weather resilience
Wildlife
Vegetation management
Safety in the community
Drone safety and the law
Level crossing safety
Railway safety campaigns
Safety education
Station safety
Suicide prevention on the railway
Community Rail
Community Rail FAQs
Community Rail routes
Community schemes
Station friends groups
Railway enthusiasts
Guidelines for taking photos at stations
Landscape Photographer of the Year
Social performance
Charities and volunteering
Industry & commercial
Rail freight
Freight performance
Freight growth
Freight site opportunities
Move my freight by rail
Network Rail Property
Rent property
Buy property
Film on our property
Retail in our stations
Developing our portfolio
Advertising on our property
Join the property team
Information for operators
Network Statement
Network Code
Periodic Review 2018 (PR18)
Periodic review 2013 (PR13)
Sale of access rights
On-train metering
CP5 access charges
CP6 access charges
Stakeholder code of practice
TAF TAP
National Electronic Sectional Appendix
Payments for planned disruption on the railway
Payments for disruption on the railway
Contacts for the rail industry
Third party investors
Network Rail is Open for Business
Downloads for third parties
Debt investor relations
Supply chain
Supplying Infrastructure Projects
Supplying Route Services
Materials quality assurance
Network Rail supplied and facilitated resources
PRISM: supplier performance
Supply chain charter
Supply of works, services or products
Research, development and technology
Our strategy for research, development and technology (R,D&T)
Rail Innovation & Development Centres
Research and development programme
Product acceptance
Consulting
Media
National & regional news
Pictures & videos
Contact the press team
Media centre
Home
Media centre
Pictures & videos
Severn Tunnel upgrade 4
Monday 24 Oct 2016
Severn Tunnel upgrade 4
Download
Severn Tunnel upgrade 4.jpg
4016px * 2677px
4.73 MB
