Class 807

Class 807
Name	Class 807

Class 807

Class 807 is a designation applied to a family of electric multiple-unit trains introduced for intercity passenger services. Conceived to provide higher speed, improved reliability, and enhanced passenger comfort, the fleet entered service following procurement agreements and manufacturing programmes. The units have been deployed on several prominent mainlines and have influenced subsequent procurement and signalling projects.

Introduction

The Class 807 programme emerged amid contemporaneous rolling stock replacements led by agencies and ministries seeking higher-performance units to operate alongside fleets such as Class 390, Class 800, Class 801, Class 802 and older types like InterCity 125 and InterCity 225. The procurement process involved national rail corporations, pan-European manufacturers, and large leasing companies such as Eversholt Rail Group and Angel Trains. Stakeholders included infrastructure bodies like Network Rail, regulatory authorities such as the Office of Rail and Road, and transport ministers in the relevant national administration. The programme was shaped by major events including capacity growth targets, franchise competitions managed by departments akin to the Department for Transport, and wider electrification schemes connected to projects like HS2 and corridor upgrades.

Design and Technical Specifications

The Class 807 design integrates high-power traction systems supplied by major suppliers including Siemens, Alstom, and Bombardier Transportation subcontractors. The units typically feature distributed traction with modern converters derived from platforms used on Velaro or Aventra families. Bogie designs draw engineering heritage from manufacturers such as SWAG and CAF derivations with braking systems influenced by standards from Knorr-Bremse or Wabtec. On-board systems include train control and monitoring compatible with ERTMS and legacy signalling such as AWS and TPWS; passenger information systems reference displays and software common to fleets like Class 345 and Class 379.

Carbody construction utilises aluminium alloys and crashworthiness principles aligned with regulations promulgated by authorities analogous to the European Union Agency for Railways. Aerodynamics were optimized with wind-tunnel testing techniques previously employed by projects at institutions comparable to Imperial College London and research partnerships with centres like RSSB. Interiors provide multi-class seating, accessible toilets compliant with standards set by bodies similar to Equality and Human Rights Commission, and HVAC systems developed by firms related to Faiveley/Mitsubishi Heavy Industries joint ventures.

Manufacture and Procurement

Manufacturing contracts were negotiated in tender processes involving consortia including industrial groups such as Hitachi, Stadler Rail, CAF, Siemens Mobility, and Alstom. Rolling stock leasing companies and public procurers referenced frameworks similar to the Rolling Stock Leasing Company model and procurement instruments used by ministries. Supply chain management engaged suppliers across regions like West Yorkshire, Derby, Sunderland, and European centres in Bilbao, Berlin, and Kassel.

Procurement milestones were influenced by procurement law decisions, adjudications before tribunals comparable to High Court of Justice proceedings, and finance arrangements involving export credit agencies similar to UK Export Finance and institutional lenders akin to the European Investment Bank. Build programmes were scheduled with commissioning and testing phases in depots at locations such as Doncaster Plant, Crewe Works, and manufacturer sites in Newton Aycliffe.

Service History

Following delivery, the fleet underwent acceptance testing overseen by regulators equivalent to the Rail Safety and Standards Board and route acceptance teams from infrastructure operators such as Network Rail. Early deployments were validated against performance metrics tied to punctuality indices used by operators like Avanti West Coast or legacy franchises such as Virgin Trains. The units contributed to timetable recasts during strategic planning exercises conducted by transport authorities and were rolled into service during major timetable changes notified in national working timetables and public timetables influenced by events like industrial actions and holiday peaks.

Maintenance regimes were established at depots operated by third-party maintainers similar to Alstom UK Services and involved asset management practices comparable to those used by Deutsche Bahn subsidiaries and private maintenance contractors operating under long-term service agreements.

Operations and Routes

Class 807 units have been scheduled on intercity corridors linking principal nodes analogous to London Euston, Birmingham New Street, Manchester Piccadilly, Edinburgh Waverley, Glasgow Central, Leeds, Sheffield and coastal hubs like Newcastle. Services include express formations replacing locomotive-hauled sets on routes formerly dominated by HST services and integrate with electrified mainlines upgraded under projects similar to Great Western Main Line electrification and route modernisations paralleling East Coast Main Line enhancements.

Operational deployment required interface compatibility with depot equipment at yards such as Bescot, Polmadie, and Readypoint and coordination with signalling centres modelled on Birmingham Rail Operating Centre and Inverness ROC equivalents. Timetable planning references franchise agreements, operator commitments, and rolling stock diagrams similar to those used by TransPennine Express and other intercity operators.

Incidents and Modifications

Over their service life the fleet experienced incidents that prompted technical modifications and policy reviews. Event investigations were carried out by enquiries resembling those by the Rail Accident Investigation Branch with follow-up modifications overseen by regulatory agencies akin to the Office of Rail and Road. Changes included software updates to traction control systems supplied by companies like Alstom or Siemens, reinforcement of crash elements in line with European crashworthiness directives, and retrofits for passenger amenities following passenger feedback gathered through industry surveys run by organisations similar to Transport Focus.

Reliability enhancement programmes addressed component failures referenced in maintenance bulletins issued by suppliers such as Knorr-Bremse and Sifco. Accessibility upgrades and onboard environment improvements were implemented after consultations with stakeholder groups including disability organisations like Scope and transport user groups such as Campaign for Better Transport.

Category:British multiple units