
The Bristol 175 Britannia was designed by the Bristol Aeroplane Company to meet the requirements of British Overseas Aircraft Corporation (BOAC) trans-Atlantic routes, carrying upto 90 passengers back and forth to the USA.
An initial 25 (Bristol Britannia 100) were ordered by BOAC in July 1949 and the name Britannia chosen in April 1950.
The prototype (G-ALBO) was first flown on 16th August 1952 at Filton Aerodrome with Test Pilot A.J. 'Bill' Pegg at the controls.
The maiden flight was not without difficulties as not only were the controls thought to be 'over-sensitive' but during the final approach the cockpit filled with smoke, caused by a stuck undercarriage bogie that continuously recycyled - Thankfully, it finally locked into position moments before landing.
One prototype was lost in December 1953, following an engine fire and forced landing on the banks of the Severn. Engine icing problems caused flame-outs and required significant development activity. As a result, the type did not enter BOAC service until February 1957, initially on the Johannesburg route.
In service, the elegant Bristol 175 Britannia was advertised as ‘The Whispering Giant’. Stretched developments were offered for all cargo (Bristol Britannia 200), passenger cargo (Bristol Britannia 250) and all passenger operations (Bristol Britannia 300).
BOAC selected the Bristol Britannia 300 for the trans-Atlantic route, leading to additional orders from El Al and Canadian Pacific. The Bristol 175 Britannia 301 was first flown on 31st July 1956 whilst the Bristol Britannia 310, with increased fuel capacity, flew in December of the same year.
The first Bristol 175 Britannia service from London to New York was flown in December 1957.

The RAF ordered 23 mixed passenger-cargo aircraft for use by Transport Command (3 x Bristol Britannia 252 and 20 x Bristol Britannia 253), these being delivered in 1959 and 1960.
18 of the RAF fleet were built by Short Brothers & Harland in Belfast.


After retirement from the RAF, a number of aircraft were converted for civil cargo use, such OO-YCA (ex-XL635) of Young Cargo Airlines photographed above.
In Canada, a piston engined derivative of the Bristol 175 Britannia (the Canadair Argus) served in the maritime patrol role. Tyne-powered stretched developments of the type were also produced in Canada, designated as the Canadair Yukon for RCAF transport use. It was also produced as the Canadair CL-44D, fitted with a swing-tail and used for freight operations.
Four Canadair CL-44 aircraft were sold to Loftleidir (without the swing tail) and were configured for 160 passengers. These aircraft were later further stretched to carry up to 189 passengers and designated as the CL-44J.
85 Bristol 175 Britannia aircraft were built, including those sub-contracted to Short Bros. & Harland Ltd in Belfast. Canadair built 33 Argus as well as a total of 39 Yukon and CL-44D. Although troubled initially by engine icing, the Bristol 175 Britannia eventually proved itself to be safe and robust in service.
Specification
Srs 100 | Srs 253 | Srs 312 | |
Powerplant | Four 3,780 ehp Bristol Proteus 705 | Four 4,400 ehp Bristol Proteus 255 | Four 4,450 ehp Bristol Proteus 755 |
Span | 142 ft 3 in | ||
Maximum AUW | 155,000 lb | 185,000 lb | |
Capacity | 7 crew 90 passengers | 4 to 7 crew and 139 passengers | |
Cruising Speed | 362 mph | 360 mph | 357 mph |
Max Range | 4,580 miles | 5,334 miles | 5,310 miles |
Number built
85 | All variants - see table below |
Variants
Bristol Britannia 100 | Seventy-four passenger airliner with 114 ft (35m) fuselage and powered by four Bristol Proteus 705 |
Bristol Britannia 101 | Prototypes, 2 initially powered by Proteus 625 and soon after re-engined with the Proteus 755 |
Bristol Britannia 102
15 Built
|
Production aircraft for BOAC |
Bristol Britannia 250 | Mixed passenger freight variant with a 124 ft 3 in fuselage |
Bristol Britannia 252
3 built
|
Delivered to the Royal Air Force, as the Britannia C2. Fitted with a heavy-duty floor in forward area of fuselage and cargo door. |
Bristol Britannia 253
20 built
|
Passenger/freight variant for the Royal Air Force, designated Britannia C1. Capacity for 115 troops or equivalent in cargo. Aircraft later sold on the civil market as freighters designated Bristol Britannia 253F. |
Bristol Britannia 300 | Passenger only 'stretched' version of the 100 Bristol Britannia, with 10 ft 3 in (3.1 m) fuselage stretch, capable of carrying up to 139 passengers. |
Bristol Britannia 301
1 Built
|
1 Filton-built company prototype, used the same wing and fuel capacity of the Model 100; first flew: 31st July 1956. |
Bristol Britannia 302
2 built
|
Belfast-built production, delivered to Aeronaves de Mexico. |
Bristol Britannia 307
2 built
|
Air Charter Limited September 1958 and March 1959, later to British United Airways. |
Bristol Britannia 308
2 built
|
Transcontinental SA of Argentina in 104-passenger configuration. |
Bristol Britannia 309
1 built
|
Leased to Ghana Airways. |
Bristol Britannia 311
1 built
|
Prototype originally known as a 300LR. |
Bristol Britannia 312 | Production aircraft for BOAC, 18 built. |
Bristol Britannia 312F
5 conversions
|
1960s conversion of 312 to freighter. |
Bristol Britannia 313
4 built
|
Production aircraft for El Al. |
Bristol Britannia 314
6 built
|
Production aircraft for Canadian Pacific Air Lines. |
Bristol Britannia 317
2 built
|
Production aircraft for Hunting-Clan Air Transport in 124 passenger trooping configuration. |
Bristol Britannia 318
4 built
|
Production aircraft for Cubana de Aviación. |
Bristol Britannia 319
1 built
|
Ghana Airways, modified from original Model 310/311 Bristol Britannia. |
Bristol Britannia 324
2 built
|
Canadian Pacific Air Lines, later purchased by Cunard Eagle Airways in 1961. |
Survivors
Bristol Britannia 308F
(G-ANCF)
|
Britannia Aircraft Preservation Trust, Liverpool Speke Airport, UK
|
Bristol Britannia 312
(G-AOVF/XM497)
|
RAF Museum, Cosford, Shropshire, UK
|
Bristol Britannia 312
(G-AOVT)
|
Imperial War Museum Duxford, Cambs, UK
|
Bristol Britannia C.1
(XM496) Regulus
|
XM496 Preservation Society, Kemble Airfield, Gloucestershire, UK
|