British Rail Class 801
Electric Multiple Unit Train with diesel emergency power.

The British Rail Class 801 Azuma is a class of electric multiple unit (EMU) built by Hitachi Rail for London North Eastern Railway. The units have been built since 2017 at Hitachi's Newton Aycliffe Manufacturing Facility and have been used on services on the East Coast Main Line since 16 September 2019. As part of its production, the Class 801 units were ordered as part of the Intercity Express Programme and are in the Hitachi AT300 product family, alongside the closely related Class 800 units. LNER have branded the units as the Azuma, just like on their Class 800 units.
Background and design
As part of the UK Government's Intercity Express Programme, the Class 801 units were to be built as replacements for the InterCity 125 and InterCity 225 sets which were the main trains used for services on the Great Western Main Line (GWML) and the East Coast Main Line (ECML) at the time. Differing from the Class 800 units, which they were built alongside, the Class 801 units were designed as purely electric multiple units, but with one diesel engine fitted to a single coach of each unit for emergency use. The Class 801 units were to enter service for both Great Western Railway and London North Eastern Railway but due to delays in the electrification of the GWML, it was announced in June 2016 that 21 nine-car (801/0) sets that were going to enter service with GWR would instead be converted to bi-modal operation. As a consequence, all of these sets were re-classified as 800/3 units and the Class 801 units only see operation on the ECML. However, GWR do have the option to convert all of their Class 800 units to electric-only operation by removal of the diesel engines should it be exercised, in which case they would be re-classified as a Class 801 unit.
Operations
The first service to be operated with Class 801 units ran on 16 September 2019, with a pair of 801/1 five-car units operating several services between Leeds and London King's Cross, as well as one return trip between King's Cross and Newark Northgate. Three further pairs of five-car units entered service through the rest of September.
This brief starts where responsible research should: with the source description of “British Rail Class 801” as electric Multiple Unit Train with diesel emergency power. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the general reference register because the source frames it as electric Multiple Unit Train with diesel emergency power. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Aug 31, 2026. The linked authority identifier is Q16846948. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2017, 2019 and 2016.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “British Rail Class 801”, its source revision and the description used here.
- Expand the search: follow British Rail Class 801 primary sources, British Rail Class 801 archive and British research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “British Rail Class 801”?
- Which cited source is closest to the event, object or claim?
- What terminology or title could unlock a more precise catalogue search?
Search terms from this dossier
This entry incorporates text from “British Rail Class 801” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.