R30551SS LNER - Class A4 - 'Mallard' - 4468 (With Steam Generator)
Pre-order | Expected Autumn 2026
£389.99
Item code:
R30551SS
Your payment card will be charged 14 days prior to delivery but we will notify you by email with an exact date.
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Product Info
One of the most famous of all steam locomotives, ‘Mallard’ still holds the world speed record for steam. In July 1938, it reached 126mph on Stoke Bank.
Entering service in March of that year in LNER Garter blue, it had full side valances and red wheels, as depicted by our highly detailed model. It was renumbered 22 in 1946, by which time it carried wartime plain black. When it was withdrawn from King’s Cross in April 1963, it was in lined BR green and numbered 60022.
The locomotive is preserved in its original livery at the National Railway Museum in York. 'Mallard' has always been one of our most popular models. In 2026, we have given the A4 a tooling update and the model now includes the new Hornby steam generator technology, working headlights and tender lights.
Specific to R30551SS
- Running number 4468
- Lined Garter Blue livery
- Non-corridor tender
- Double chimney arrangement
- Valanced streamline body made from die-cast metal
- LHD cab arrangement
- Working headlights
- Working tender lights
Common Class A4 features
- High detail OO gauge model based on extensive research and original works drawings
- Die-cast chassis and boiler
- High detail cab and fully decorated backhead with decorated instrument dials
- Pre-fitted 21-pin HM7000 decoder and speaker. The decoder is compatible with NMRA DCC controllers, HM7000 APP control and has the Class A4 sound profile pre-installed for accurate locomotive sounds, synchronised with the chuff rate.
- Pre-fitted steam generator system featuring an optical sensor for accurate chuff rate synchronised with the wheel speed. Steam output is created using piezo element technology. This is a cold water-based system (no heating element).
- Adjustable steam output settings via the decoder
- HM7000 Power Bank compatible
- Powerful 5 pole skew wound motor
- Illuminated flickering firebox
- Quick release locomotive to tender connector
- Pogo pin wheel pickup arrangement for easy pickup servicing
- Electrical pickups on main drive wheels and tender wheels
- Fully decorated crew figures
- Turned brass safety valve
- Prototypical size metal handrails with brass stanchions
- Brass main drive bearings
- Sprung metal buffers
- Front and rear NEM coupling pocket
- Separately fitted simulated coal load.
Welcome to the HM7000 Control System
HM7000 is an innovative way of controlling and operating model railways. Combining Bluetooth® technology and app-based control, the HM7000 Control System has been designed to revolutionise the controlling of a model railway.
Learn more
- Bluetooth® Connectivity
- Free Sounds
- Quick CV Editing
- Multiple Control Options
- 40+ Profile Settings
- Other Options
Upgrade Paths
Previous Control Systems can be upgraded to HM7000, see below for the options and upgrade paths available.
-
Train Set > HM7000
Already have a locomotive but want to go digital? Click here to discover how.
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HM6000 > HM7000
The HM6000 system is only a short step away from having HM7000. Click here to discover how.
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HM|DC > HM7000
New to the hobby? HM7000 is just a short step away. Click here to discover how.
-
DCC > HM7000
Already operating a layout using DCC? HM7000 is just a short step away. Click here to discover how.
-
Conventional DCC Controller > HM7000
Locomotives fitted with either a Hornby HM7000 or conventional decoders can be operated using the HM|DCC Bluetooth® system - click here to learn how.
HM7000 Products
The following points must be considered below when purchasing. HM | DCC and the HM7000 decoders have been extensively tested up to a range of 45 metres in plastic bodied locomotives and up to 12 metres in die-cast bodied locomotives. HM | DCC and the HM7000 decoders have been extensively tested up to a max of 14 non-stationary, running locomotives. HM | DCC and the HM7000 decoders have been extensively tested on iOS devices dating as far back as 5 years from today's date. Any devices older than this cannot be commented on for proper function by Hornby Hobbies. Please ensure that the incompatibility list is considered prior to any purchase.
What's Inside
Recommended For You
Tech Specs
- Item Length - Without Packaging (cm)
- 36
- Item Height - Without Packaging (cm)
- 5
- Item Width - Without Packaging (cm)
- 3.5
- Item Scale
- 1:76 Scale 00 Gauge
- Gauge
- OO
- DCC Status
- HM7000 Fitted - With Sound
- Operator
- LNER
- Livery
- Blue
- Minimum Curve (mm)
- Radius 2
- Motor
- 5 Pole Skew wound
- Buffer Type
- Sprung Metal Buffers
- Coupling Type
- NEM Tension Lock
- Hornby Decoder Compatibility Primary
- HM7000-21TXS: Bluetooth® & DCC Sound Decoder (21-pin)
Detailed scale model. Not suitable for children under 14 years. Please refer to safety notes in enclosed instruction leaflet. Colours and contents may differ from those illustrated. Please retain these details and the address for future reference.










