Class 803

• Door colour: grey on 803004 (2026), 803005 and the 2022 Colton view; 803001 at Offord (June 2023, in sun) shows its doors in the body blue, so some units may differ or have been repainted
• Drawing: no drawing of the 803 is published; it is drawn as the Class 800, whose bodyshell Lumo says it shares, so it carries the 800's doubts (driving-car length 83 ft 10 in (25.56 m) on LNER's drawings against Hitachi's 83 ft 2 in (25.35 m); heights above drawn wheels 3 ft 6 in (1.06 m) across)
• Car lengths: the Class 800's (85 ft 6 in (26.06 m) driving cars, 85 ft 4 in (26.0 m) intermediate), not published for the 803 itself
• Car height: the Class 800's drawn 12 ft 3 in (3.725 m); car width not found for the 803 (Angel Trains gives the 802 as 8 ft 10 in (2.7 m) wide)
• The driving cars' cab-end bogie: placed at 14 ft 7 in (4,455 mm) from the nose from three side-on photographs (801226, 800017, 801107; they agree within about 50 mm), not from a dimensioned drawing; the wheelbase is drawn 2,600, Beacon's figure for the 803 (set C800B3); the intermediate cars' span is the 800's 16,700 against Beacon's 17,000
• Doors: two single-leaf doors a side at the car ends, seen in photographs and as the Class 800 (Hitachi gives end doors for the family)
• Colours: sampled from photographs; no paint references have been published. The orange cantrail line is too thin in every photograph to sample cleanly
• Top speed: Lumo says the trains can run at 140 mph (225 km/h) but are limited to the line speed of 125 mph (201 km/h); the ORR authorisation and Beacon give 125 mph (201 km/h)
• Seats: 402 (The i Paper, 2021, and Wikipedia); Beacon gives a 'passenger capacity' of 400; Lumo's fleet page now gives 390 seats (52 of them priority seats) and 2 wheelchair spaces
• Built: bodyshells made at Hitachi's Kasado works in Japan (Wikipedia; Lumo says only 'from Japan')
• The pantographs: placed from photographs (scaled by the driving car's doors and windows, to about 0.3 m); no drawing of this class's roof has been published; drawn with no roof well, as photographs show the roof line level over it from the side (set C800F, 13 October 2026), the folded pantograph standing about 240 mm above the roof edge, read off a close platform photograph of 811011 at Paddington scaled by its door: a lower bound, the camera being below the roof; a level, long-lens photograph would measure it
• The cab front: laid on ADPL's sheet 1 outline (side B), within 6 mm; compared with 802304 at Welton (three-quarter) for its shape only
• The bogies: the wheelbase is drawn 8 ft 6 in (2,600 mm), Beacon's figure for the 803 (the photographs read 2,574-2,670); the driving cars' inner bogie centre is drawn at 70 ft 4 in (21,450 mm) from the nose, against about 21,510 (±30) on two long-lens photographs of 802111 and about 21,590 on Beacon's diagram fitted to the doors: not settled, so left as drawn
• The underframes (set UFAT300): from photographs only, no drawing of the AT300's underframe having been published; positions to about 150 mm on the level photographs and 1 ft 0 in to 2 ft 0 in (300-600 mm) on the three-quarter ones; intermediate cars without a side-on photograph of their own drawn with plain panels, or the 805's generator-unit group, as the record's underframe_checked says
• The inner gangway (set JN807): from photographs of 802 and 800 joins, and the 807's seen three-quarter; no drawing of the gangway has been published. The bellows' top is drawn 11 ft 1 in (3,390 mm; the photographs read 3,358 and 3,425), their foot 1,220 (839111; 800020, closer, reads about 1,330); the cables' loops and the brackets are placed from the photographs to about 100 mm

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