Class 700

Class 700 Class 700 is a designation applied to a family of high-capacity multiple-unit passenger trains introduced for intensive commuter and intercity services. Originating from a procurement programme involving national and regional authorities, manufacturers, and operators, the type was developed to meet requirements for higher throughput, shorter dwell times, and improved passenger amenities. Design priorities included modular construction, energy efficiency, and compatibility with existing electrification and depot facilities.

Design and Development

The design and development phase involved collaborations among Bombardier Transportation, Siemens, Hitachi, Alstom, CAF, Stadler Rail, Hitachi Rail, Kawasaki Heavy Industries, Nippon Sharyo, Hyundai Rotem, CRRC, Vossloh, Talgo, AnsaldoBreda, Nippon Steel, Mitsubishi Heavy Industries, General Electric, ABB Group, Thales Group, Knorr-Bremse, Wabtec, ZF Friedrichshafen, Bosch Rexroth, and Rolls-Royce Holdings for subsystems and consultancy. Procurement was overseen by transport authorities including Network Rail, Transport for London, Department for Transport (United Kingdom), Transport Scotland, Transport for Greater Manchester, Northern Trains, West Midlands Trains, Southeastern (train operating company), Avanti West Coast, Great Western Railway, Eurostar International Limited, and regional councils. Conceptual work referenced prior programmes such as the Intercity Express Programme, the Thameslink Programme, the Crossrail Project, and the High Speed 1 corridor planning. Design constraints demanded compliance with rolling stock standards set by Rail Safety and Standards Board, European Union Agency for Railways, and national safety bodies, while meeting timetable commitments negotiated with unions including ASLEF and RMT (trade union).

Technical Specifications

Technical specifications combined lightweight materials, modular electrical architecture, and customer-focused interior layouts. The carbody materials cited ranges from aluminium alloy formulations developed by Alcoa to high-strength steels supplied by Tata Steel and ArcelorMittal. Bogie design references work by Siemens Mobility and Bombardier with braking systems from Knorr-Bremse and Wabtec. Traction equipment integrated converters and inverters using power electronics from ABB, Siemens AG, and Hitachi; auxiliary systems included HVAC units by Carrier Global and Mitsubishi Heavy Industries. Maximum speed, axle load, and acceleration targets were calibrated against infrastructure limits overseen by Network Rail and compatibility with electrification schemes such as 25 kV AC and 750 V DC third-rail systems noted by European Commission (Transport). Accessibility features were specified in line with guidance from Equality and Human Rights Commission, Disabled Persons Transport Advisory Committee, and regional accessibility plans by Transport for London.

Operations and Service Deployment

Deployment strategies coordinated timetable integration with major hubs including London St Pancras International, London King's Cross, London Bridge station, Birmingham New Street, Manchester Piccadilly station, Glasgow Central, Leeds railway station, Liverpool Lime Street, Heathrow Airport, and Gatwick Airport. Operators planned driver training programmes with involvement from RSSB and academies run by Train Operating Company partners and manufacturer training centres. Network roll-out referenced commissioning milestones used in the Intercity Express Programme and testing regimes at facilities like Velim Test Centre and national depots such as Doncaster Plant Works and Heathrow Depot. Service patterns emphasized short headways on congested corridors and longer-distance rotations connecting regional centres with airports and ports managed by Port of Dover and cruise terminals.

Manufacturing and Fleet Variants

Manufacturing contracts were distributed across assembly sites in the United Kingdom, Germany, Spain, Italy, Japan, and South Korea, leveraging supply chains involving Siemens Mobility, Alstom Transport, CAF, STADLER, Hitachi Rail and CRRC. Fleet variants included shorter suburban units tailored for high-frequency commuter services and longer intercity sets equipped with additional luggage and catering areas for airport and port links. Configurations were adapted to depot constraints at Willesden TMD, Electrostar depots, Bescot TMD, and regional servicing centres, with mid-life refit programmes coordinated with Network Rail and local transport authorities.

Safety and Incidents

Safety systems incorporated ATP, ETCS, AWS, and TPWS technologies developed by Thales Group, Siemens Mobility, Bombardier Transportation, and Alstom. Emergency evacuation procedures and crashworthiness standards referenced work by European Union Agency for Railways and national regulators. Recorded incidents prompted investigations involving Rail Accident Investigation Branch, Office of Rail and Road, and safety boards; responses included modifications to couplers, door control logic supplied by Knorr-Bremse, and revised maintenance schedules with contractors including Wabtec Corporation and local depot teams. Legal and regulatory follow-ups engaged bodies such as Health and Safety Executive and regional transport ombudsmen.

Reception and Impact

The introduction of the type provoked commentary from industry bodies like Rail Delivery Group, unions including RMT (trade union) and ASLEF, and passenger advocacy groups such as Transport Focus and Railfuture. Economic impact studies referenced regional development plans by Local Enterprise Partnerships and infrastructure investment reports prepared for Department for Transport (United Kingdom), while environmental assessments cited modelling by Committee on Climate Change and emissions standards linked to European Green Deal objectives. The fleet influenced subsequent procurement strategies across Europe and Asia, and its service performance remains a case study in modern rolling stock deployment for transport planners and rail manufacturers.

Category:Passenger trains